51920534015 has 24 divisors (see below), whose sum is σ = 76291403760. Its totient is φ = 33728825088.

The previous prime is 51920533963. The next prime is 51920534033. The reversal of 51920534015 is 51043502915.

It is not a de Polignac number, because 51920534015 - 2⁸ = 51920533759 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

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, 5572202 + ... + 5581511.

It is an arithmetic number, because the mean of its divisors is an integer number (3178808490).

Almost surely, 2^51920534015 is an apocalyptic number.

51920534015 is a deficient number, since it is larger than the sum of its proper divisors (24370869745).

51920534015 is a wasteful number, since it uses less digits than its factorization.

51920534015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11153751 (or 11153744 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 35.

The spelling of 51920534015 in words is "fifty-one billion, nine hundred twenty million, five hundred thirty-four thousand, fifteen".