158621307688 has 32 divisors (see below), whose sum is σ = 301281140160. Its totient is φ = 78284689920.

The previous prime is 158621307679. The next prime is 158621307763. The reversal of 158621307688 is 886703126851.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60553 + ... + 566488.

It is an arithmetic number, because the mean of its divisors is an integer number (9415035630).

Almost surely, 2^158621307688 is an apocalyptic number.

It is an amenable number.

158621307688 is a deficient number, since it is larger than the sum of its proper divisors (142659832472).

158621307688 is a wasteful number, since it uses less digits than its factorization.

158621307688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627457 (or 627453 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 55.

The spelling of 158621307688 in words is "one hundred fifty-eight billion, six hundred twenty-one million, three hundred seven thousand, six hundred eighty-eight".