158891525864 has 16 divisors (see below), whose sum is σ = 297940056900. Its totient is φ = 79440844032.

The previous prime is 158891525843. The next prime is 158891525867. The reversal of 158891525864 is 468525198851.

It can be written as a sum of positive squares in 2 ways, for example, as 147878702500 + 11012823364 = 384550^2 + 104942^2 .

It is a junction number, because it is equal to n+sod(n) for n = 158891525797 and 158891525806.

It is not an unprimeable number, because it can be changed into a prime (158891525867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 475727 + ... + 737630.

Almost surely, 2^158891525864 is an apocalyptic number.

It is an amenable number.

158891525864 is a deficient number, since it is larger than the sum of its proper divisors (139048531036).

158891525864 is a wasteful number, since it uses less digits than its factorization.

158891525864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1229732 (or 1229728 counting only the distinct ones).

The product of its digits is 27648000, while the sum is 62.

The spelling of 158891525864 in words is "one hundred fifty-eight billion, eight hundred ninety-one million, five hundred twenty-five thousand, eight hundred sixty-four".