51118864360500 has 96 divisors (see below), whose sum is σ = 148987243117440. Its totient is φ = 13619873894400.

The previous prime is 51118864360489. The next prime is 51118864360511. The reversal of 51118864360500 is 506346881115.

It is an interprime number because it is at equal distance from previous prime (51118864360489) and next prime (51118864360511).

It is a super-2 number, since 2×51118864360500² (a number of 28 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 51118864360500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13049010 + ... + 16508009.

It is an arithmetic number, because the mean of its divisors is an integer number (1551950449140).

Almost surely, 2^{51118864360500} is an apocalyptic number.

51118864360500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51118864360500 is an abundant number, since it is smaller than the sum of its proper divisors (97868378756940).

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

51118864360500 is a wasteful number, since it uses less digits than its factorization.

51118864360500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29558194 (or 29558182 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 48.

The spelling of 51118864360500 in words is "fifty-one trillion, one hundred eighteen billion, eight hundred sixty-four million, three hundred sixty thousand, five hundred".