51597079516 has 48 divisors (see below), whose sum is σ = 96349397760. Its totient is φ = 24108140160.

The previous prime is 51597079511. The next prime is 51597079517. The reversal of 51597079516 is 61597079515.

It is a super-2 number, since 2×51597079516² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51597079511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1647136 + ... + 1678168.

It is an arithmetic number, because the mean of its divisors is an integer number (2007279120).

Almost surely, 2^51597079516 is an apocalyptic number.

It is an amenable number.

51597079516 is a deficient number, since it is larger than the sum of its proper divisors (44752318244).

51597079516 is a wasteful number, since it uses less digits than its factorization.

51597079516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31354 (or 31352 counting only the distinct ones).

The product of its (nonzero) digits is 2976750, while the sum is 55.

Subtracting 51597079516 from its reverse (61597079515), we obtain a palindrome (9999999999).

The spelling of 51597079516 in words is "fifty-one billion, five hundred ninety-seven million, seventy-nine thousand, five hundred sixteen".