51000011005050 has 36 divisors (see below), whose sum is σ = 137020029568110. Its totient is φ = 13600002934560.

The previous prime is 51000011005043. The next prime is 51000011005057. The reversal of 51000011005050 is 5050011000015.

51000011005050 is a `hidden beast` number, since 51 + 0 + 0 + 0 + 0 + 110 + 0 + 505 + 0 = 666.

51000011005050 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (51000011005043) and next prime (51000011005057).

It can be written as a sum of positive squares in 3 ways, for example, as 39492589881969 + 11507421123081 = 6284313^2 + 3392259^2 .

It is a super-2 number, since 2×51000011005050² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51000011005057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 56666678445 + ... + 56666679344.

Almost surely, 2^{51000011005050} is an apocalyptic number.

51000011005050 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51000011005050 is an abundant number, since it is smaller than the sum of its proper divisors (86020018563060).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51000011005050 is a wasteful number, since it uses less digits than its factorization.

51000011005050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113333357807 (or 113333357799 counting only the distinct ones).

The product of its (nonzero) digits is 125, while the sum is 18.

Adding to 51000011005050 its reverse (5050011000015), we get a palindrome (56050022005065).

The spelling of 51000011005050 in words is "fifty-one trillion, eleven million, five thousand, fifty".