158591634432 has 792 divisors, whose sum is σ = 572716537920. Its totient is φ = 38474956800.

The previous prime is 158591634403. The next prime is 158591634433. The reversal of 158591634432 is 234436195851.

It is not an unprimeable number, because it can be changed into a prime (158591634433) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2233684957 + ... + 2233685027.

Almost surely, 2^158591634432 is an apocalyptic number.

158591634432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 158591634432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (286358268960).

158591634432 is an abundant number, since it is smaller than the sum of its proper divisors (414124903488).

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

158591634432 is a wasteful number, since it uses less digits than its factorization.

158591634432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209 (or 113 counting only the distinct ones).

The product of its digits is 3110400, while the sum is 51.

The spelling of 158591634432 in words is "one hundred fifty-eight billion, five hundred ninety-one million, six hundred thirty-four thousand, four hundred thirty-two".