50947866531 has 24 divisors (see below), whose sum is σ = 75512455200. Its totient is φ = 33081360000.

The previous prime is 50947866527. The next prime is 50947866533. The reversal of 50947866531 is 13566874905.

50947866531 is a `hidden beast` number, since 5 + 0 + 9 + 47 + 8 + 66 + 531 = 666.

It is not a de Polignac number, because 50947866531 - 2² = 50947866527 is a prime.

It is a super-2 number, since 2×50947866531² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (50947866533) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 105781 + ... + 336281.

It is an arithmetic number, because the mean of its divisors is an integer number (3146352300).

Almost surely, 2^50947866531 is an apocalyptic number.

50947866531 is a deficient number, since it is larger than the sum of its proper divisors (24564588669).

50947866531 is a wasteful number, since it uses less digits than its factorization.

50947866531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231147 (or 231144 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 54.

The spelling of 50947866531 in words is "fifty billion, nine hundred forty-seven million, eight hundred sixty-six thousand, five hundred thirty-one".