158531352687 has 32 divisors (see below), whose sum is σ = 236243804160. Its totient is φ = 105065851680.

The previous prime is 158531352667. The next prime is 158531352691. The reversal of 158531352687 is 786253135851.

158531352687 is a `hidden beast` number, since 1 + 5 + 8 + 5 + 31 + 3 + 526 + 87 = 666.

It is not a de Polignac number, because 158531352687 - 2⁷ = 158531352559 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158531352667) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22315378 + ... + 22322480.

It is an arithmetic number, because the mean of its divisors is an integer number (7382618880).

Almost surely, 2^158531352687 is an apocalyptic number.

158531352687 is a deficient number, since it is larger than the sum of its proper divisors (77712451473).

158531352687 is a wasteful number, since it uses less digits than its factorization.

158531352687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11860 (or 11854 counting only the distinct ones).

The product of its digits is 6048000, while the sum is 54.

The spelling of 158531352687 in words is "one hundred fifty-eight billion, five hundred thirty-one million, three hundred fifty-two thousand, six hundred eighty-seven".