51165015016 has 8 divisors (see below), whose sum is σ = 95934403170. Its totient is φ = 25582507504.

The previous prime is 51165014921. The next prime is 51165015037. The reversal of 51165015016 is 61051056115.

It can be written as a sum of positive squares in only one way, i.e., 44931280900 + 6233734116 = 211970^2 + 78954^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3197813431 + ... + 3197813446.

Almost surely, 2^51165015016 is an apocalyptic number.

It is an amenable number.

51165015016 is a deficient number, since it is larger than the sum of its proper divisors (44769388154).

51165015016 is a wasteful number, since it uses less digits than its factorization.

51165015016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6395626883 (or 6395626879 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 31.

The spelling of 51165015016 in words is "fifty-one billion, one hundred sixty-five million, fifteen thousand, sixteen".