51264624775 has 72 divisors (see below), whose sum is σ = 78787531680. Its totient is φ = 32399377920.

The previous prime is 51264624773. The next prime is 51264624841. The reversal of 51264624775 is 57742646215.

It is not a de Polignac number, because 51264624775 - 2¹ = 51264624773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51264624773) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 35873761 + ... + 35875189.

Almost surely, 2^51264624775 is an apocalyptic number.

51264624775 is a deficient number, since it is larger than the sum of its proper divisors (27522906905).

51264624775 is a wasteful number, since it uses less digits than its factorization.

51264624775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2685 (or 2667 counting only the distinct ones).

The product of its digits is 2822400, while the sum is 49.

The spelling of 51264624775 in words is "fifty-one billion, two hundred sixty-four million, six hundred twenty-four thousand, seven hundred seventy-five".