231557054672844 has 72 divisors (see below), whose sum is σ = 586229685900768. Its totient is φ = 77066392423680.

The previous prime is 231557054672843. The next prime is 231557054672899. The reversal of 231557054672844 is 448276450755132.

231557054672844 is a `hidden beast` number, since 2 + 3 + 1 + 5 + 5 + 7 + 0 + 546 + 7 + 2 + 84 + 4 = 666.

It is not an unprimeable number, because it can be changed into a prime (231557054672843) 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, 153586114 + ... + 155086454.

It is an arithmetic number, because the mean of its divisors is an integer number (8142078970844).

Almost surely, 2^{231557054672844} is an apocalyptic number.

It is an amenable number.

231557054672844 is an abundant number, since it is smaller than the sum of its proper divisors (354672631227924).

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

231557054672844 is a wasteful number, since it uses less digits than its factorization.

231557054672844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1506975 (or 1506970 counting only the distinct ones).

The product of its (nonzero) digits is 225792000, while the sum is 63.

The spelling of 231557054672844 in words is "two hundred thirty-one trillion, five hundred fifty-seven billion, fifty-four million, six hundred seventy-two thousand, eight hundred forty-four".