51118837368 has 32 divisors (see below), whose sum is σ = 127840930560. Its totient is φ = 17033767520.

The previous prime is 51118837349. The next prime is 51118837447. The reversal of 51118837368 is 86373881115.

It is a super-2 number, since 2×51118837368² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51118837368.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 293598 + ... + 434093.

It is an arithmetic number, because the mean of its divisors is an integer number (3995029080).

Almost surely, 2^51118837368 is an apocalyptic number.

It is an amenable number.

51118837368 is an abundant number, since it is smaller than the sum of its proper divisors (76722093192).

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

51118837368 is a wasteful number, since it uses less digits than its factorization.

51118837368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 730627 (or 730623 counting only the distinct ones).

The product of its digits is 967680, while the sum is 51.

The spelling of 51118837368 in words is "fifty-one billion, one hundred eighteen million, eight hundred thirty-seven thousand, three hundred sixty-eight".