50815665631 has 8 divisors (see below), whose sum is σ = 51454409760. Its totient is φ = 50179717632.

The previous prime is 50815665611. The next prime is 50815665643. The reversal of 50815665631 is 13656651805.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 50815665631 - 2⁹ = 50815665119 is a prime.

It is a super-2 number, since 2×50815665631² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50815665611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 662446 + ... + 735163.

It is an arithmetic number, because the mean of its divisors is an integer number (6431801220).

Almost surely, 2^50815665631 is an apocalyptic number.

50815665631 is a deficient number, since it is larger than the sum of its proper divisors (638744129).

50815665631 is a wasteful number, since it uses less digits than its factorization.

50815665631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1398065.

The product of its (nonzero) digits is 648000, while the sum is 46.

The spelling of 50815665631 in words is "fifty billion, eight hundred fifteen million, six hundred sixty-five thousand, six hundred thirty-one".