51451144011 has 12 divisors (see below), whose sum is σ = 78689985192. Its totient is φ = 32283070656.

The previous prime is 51451144009. The next prime is 51451144027. The reversal of 51451144011 is 11044115415.

It is a happy number.

51451144011 is a `hidden beast` number, since 5 + 145 + 114 + 401 + 1 = 666.

It is not a de Polignac number, because 51451144011 - 2¹ = 51451144009 is a prime.

It is a super-2 number, since 2×51451144011² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51451144081) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 168140841 + ... + 168141146.

It is an arithmetic number, because the mean of its divisors is an integer number (6557498766).

Almost surely, 2^51451144011 is an apocalyptic number.

51451144011 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

51451144011 is a deficient number, since it is larger than the sum of its proper divisors (27238841181).

51451144011 is a wasteful number, since it uses less digits than its factorization.

51451144011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336282010 (or 336282007 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 27.

Adding to 51451144011 its reverse (11044115415), we get a palindrome (62495259426).

The spelling of 51451144011 in words is "fifty-one billion, four hundred fifty-one million, one hundred forty-four thousand, eleven".