158243575138 has 16 divisors (see below), whose sum is σ = 259627275360. Its totient is φ = 71739108000.

The previous prime is 158243575129. The next prime is 158243575153. The reversal of 158243575138 is 831575342851.

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, 9480963 + ... + 9497638.

It is an arithmetic number, because the mean of its divisors is an integer number (16226704710).

Almost surely, 2^158243575138 is an apocalyptic number.

158243575138 is a deficient number, since it is larger than the sum of its proper divisors (101383700222).

158243575138 is a wasteful number, since it uses less digits than its factorization.

158243575138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18978993.

The product of its digits is 4032000, while the sum is 52.

The spelling of 158243575138 in words is "one hundred fifty-eight billion, two hundred forty-three million, five hundred seventy-five thousand, one hundred thirty-eight".