51108031556811 has 24 divisors (see below), whose sum is σ = 77457988791456. Its totient is φ = 32410570072320.

The previous prime is 51108031556753. The next prime is 51108031556821. The reversal of 51108031556811 is 11865513080115.

51108031556811 is a `hidden beast` number, since 5 + 1 + 1 + 0 + 80 + 3 + 1 + 5 + 568 + 1 + 1 = 666.

51108031556811 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51108031556811 - 2¹⁷ = 51108031425739 is a prime.

It is a super-2 number, since 2×51108031556811² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51108031556821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 682003150 + ... + 682078083.

It is an arithmetic number, because the mean of its divisors is an integer number (3227416199644).

Almost surely, 2^{51108031556811} is an apocalyptic number.

51108031556811 is a deficient number, since it is larger than the sum of its proper divisors (26349957234645).

51108031556811 is a wasteful number, since it uses less digits than its factorization.

51108031556811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1364081443 (or 1364081440 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 45.

The spelling of 51108031556811 in words is "fifty-one trillion, one hundred eight billion, thirty-one million, five hundred fifty-six thousand, eight hundred eleven".