51365456316 has 30 divisors (see below), whose sum is σ = 134279449920. Its totient is φ = 17121818664.

The previous prime is 51365456291. The next prime is 51365456333. The reversal of 51365456316 is 61365456315.

It is a happy number.

51365456316 is a `hidden beast` number, since 5 + 1 + 3 + 6 + 5 + 4 + 5 + 631 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

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 9 ways as a sum of consecutive naturals, for example, 79267356 + ... + 79268003.

It is an arithmetic number, because the mean of its divisors is an integer number (4475981664).

Almost surely, 2^51365456316 is an apocalyptic number.

It is an amenable number.

51365456316 is an abundant number, since it is smaller than the sum of its proper divisors (82913993604).

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

51365456316 is a wasteful number, since it uses less digits than its factorization.

51365456316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158535375 (or 158535364 counting only the distinct ones).

The product of its digits is 972000, while the sum is 45.

Subtracting 51365456316 from its reverse (61365456315), we obtain a palindrome (9999999999).

The spelling of 51365456316 in words is "fifty-one billion, three hundred sixty-five million, four hundred fifty-six thousand, three hundred sixteen".