158327693538 has 64 divisors (see below), whose sum is σ = 381060157440. Its totient is φ = 42841965312.

The previous prime is 158327693483. The next prime is 158327693581. The reversal of 158327693538 is 835396723851.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2613831 + ... + 2673717.

It is an arithmetic number, because the mean of its divisors is an integer number (5954064960).

Almost surely, 2^158327693538 is an apocalyptic number.

158327693538 is an abundant number, since it is smaller than the sum of its proper divisors (222732463902).

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

158327693538 is a wasteful number, since it uses less digits than its factorization.

158327693538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63231.

The product of its digits is 32659200, while the sum is 60.

The spelling of 158327693538 in words is "one hundred fifty-eight billion, three hundred twenty-seven million, six hundred ninety-three thousand, five hundred thirty-eight".