51116605156 has 12 divisors (see below), whose sum is σ = 89455641660. Its totient is φ = 25557850400.

The previous prime is 51116605109. The next prime is 51116605171. The reversal of 51116605156 is 65150661115.

It can be written as a sum of positive squares in 2 ways, for example, as 38795605156 + 12321000000 = 196966^2 + 111000^2 .

It is a super-2 number, since 2×51116605156² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 395010 + ... + 508198.

It is an arithmetic number, because the mean of its divisors is an integer number (7454636805).

Almost surely, 2^51116605156 is an apocalyptic number.

It is an amenable number.

51116605156 is a deficient number, since it is larger than the sum of its proper divisors (38339036504).

51116605156 is a wasteful number, since it uses less digits than its factorization.

51116605156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226094 (or 226092 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 37.

The spelling of 51116605156 in words is "fifty-one billion, one hundred sixteen million, six hundred five thousand, one hundred fifty-six".