51168267216 has 80 divisors (see below), whose sum is σ = 160223881920. Its totient is φ = 15505534080.

The previous prime is 51168267181. The next prime is 51168267251. The reversal of 51168267216 is 61276286115.

51168267216 is a `hidden beast` number, since 511 + 68 + 2 + 6 + 72 + 1 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (51168267181) and next prime (51168267251).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5379115 + ... + 5388618.

It is an arithmetic number, because the mean of its divisors is an integer number (2002798524).

Almost surely, 2^51168267216 is an apocalyptic number.

It is an amenable number.

51168267216 is an abundant number, since it is smaller than the sum of its proper divisors (109055614704).

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

51168267216 is a wasteful number, since it uses less digits than its factorization.

51168267216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10767761 (or 10767749 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The spelling of 51168267216 in words is "fifty-one billion, one hundred sixty-eight million, two hundred sixty-seven thousand, two hundred sixteen".