51265364715 has 24 divisors (see below), whose sum is σ = 90316691088. Its totient is φ = 26893304640.

The previous prime is 51265364687. The next prime is 51265364797. The reversal of 51265364715 is 51746356215.

51265364715 is a `hidden beast` number, since 5 + 126 + 53 + 6 + 471 + 5 = 666.

It is not a de Polignac number, because 51265364715 - 2⁷ = 51265364587 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9335209 + ... + 9340698.

It is an arithmetic number, because the mean of its divisors is an integer number (3763195462).

Almost surely, 2^51265364715 is an apocalyptic number.

51265364715 is a deficient number, since it is larger than the sum of its proper divisors (39051326373).

51265364715 is a wasteful number, since it uses less digits than its factorization.

51265364715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18675979 (or 18675976 counting only the distinct ones).

The product of its digits is 756000, while the sum is 45.

The spelling of 51265364715 in words is "fifty-one billion, two hundred sixty-five million, three hundred sixty-four thousand, seven hundred fifteen".