51118634608155 has 64 divisors (see below), whose sum is σ = 91355983488000. Its totient is φ = 27119813783040.

The previous prime is 51118634608127. The next prime is 51118634608189. The reversal of 51118634608155 is 55180643681115.

51118634608155 is a `hidden beast` number, since 5 + 1 + 1 + 18 + 6 + 3 + 4 + 608 + 15 + 5 = 666.

It is not a de Polignac number, because 51118634608155 - 2⁵ = 51118634608123 is a prime.

It is a super-2 number, since 2×51118634608155² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 113710132 + ... + 114158798.

It is an arithmetic number, because the mean of its divisors is an integer number (1427437242000).

Almost surely, 2^{51118634608155} is an apocalyptic number.

51118634608155 is a deficient number, since it is larger than the sum of its proper divisors (40237348879845).

51118634608155 is a wasteful number, since it uses less digits than its factorization.

51118634608155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453121 (or 453115 counting only the distinct ones).

The product of its (nonzero) digits is 3456000, while the sum is 54.

The spelling of 51118634608155 in words is "fifty-one trillion, one hundred eighteen billion, six hundred thirty-four million, six hundred eight thousand, one hundred fifty-five".