50691387464 has 128 divisors (see below), whose sum is σ = 104324371200. Its totient is φ = 23026544640.

The previous prime is 50691387449. The next prime is 50691387493. The reversal of 50691387464 is 46478319605.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45708542 + ... + 45709650.

It is an arithmetic number, because the mean of its divisors is an integer number (815034150).

Almost surely, 2^50691387464 is an apocalyptic number.

It is an amenable number.

50691387464 is an abundant number, since it is smaller than the sum of its proper divisors (53632983736).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

50691387464 is a wasteful number, since it uses less digits than its factorization.

50691387464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1335 (or 1331 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 53.

The spelling of 50691387464 in words is "fifty billion, six hundred ninety-one million, three hundred eighty-seven thousand, four hundred sixty-four".