51115700502 has 12 divisors (see below), whose sum is σ = 110750684460. Its totient is φ = 17038566828.

The previous prime is 51115700407. The next prime is 51115700533. The reversal of 51115700502 is 20500751115.

51115700502 is a `hidden beast` number, since 5 + 1 + 1 + 157 + 0 + 0 + 502 = 666.

It is a super-2 number, since 2×51115700502² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1419880552 + ... + 1419880587.

It is an arithmetic number, because the mean of its divisors is an integer number (9229223705).

Almost surely, 2^51115700502 is an apocalyptic number.

51115700502 is an abundant number, since it is smaller than the sum of its proper divisors (59634983958).

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

51115700502 is a wasteful number, since it uses less digits than its factorization.

51115700502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2839761147 (or 2839761144 counting only the distinct ones).

The product of its (nonzero) digits is 1750, while the sum is 27.

The spelling of 51115700502 in words is "fifty-one billion, one hundred fifteen million, seven hundred thousand, five hundred two".