158439475136 has 56 divisors (see below), whose sum is σ = 345340106880. Its totient is φ = 71787209472.

The previous prime is 158439475099. The next prime is 158439475199. The reversal of 158439475136 is 631574934851.

It is a congruent number.

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, 2804546 + ... + 2860481.

Almost surely, 2^158439475136 is an apocalyptic number.

158439475136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

158439475136 is an abundant number, since it is smaller than the sum of its proper divisors (186900631744).

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

158439475136 is a wasteful number, since it uses less digits than its factorization.

158439475136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5665081 (or 5665071 counting only the distinct ones).

The product of its digits is 10886400, while the sum is 56.

The spelling of 158439475136 in words is "one hundred fifty-eight billion, four hundred thirty-nine million, four hundred seventy-five thousand, one hundred thirty-six".