51151350243 has 16 divisors (see below), whose sum is σ = 79535628800. Its totient is φ = 29229342408.

The previous prime is 51151350241. The next prime is 51151350281. The reversal of 51151350243 is 34205315115.

It is not a de Polignac number, because 51151350243 - 2¹ = 51151350241 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51151350243.

It is not an unprimeable number, because it can be changed into a prime (51151350241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24853855 + ... + 24855912.

It is an arithmetic number, because the mean of its divisors is an integer number (4970976800).

Almost surely, 2^51151350243 is an apocalyptic number.

51151350243 is a deficient number, since it is larger than the sum of its proper divisors (28384278557).

51151350243 is an equidigital number, since it uses as much as digits as its factorization.

51151350243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49709791 (or 49709777 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 30.

Adding to 51151350243 its reverse (34205315115), we get a palindrome (85356665358).

The spelling of 51151350243 in words is "fifty-one billion, one hundred fifty-one million, three hundred fifty thousand, two hundred forty-three".