158961038992 has 160 divisors (see below), whose sum is σ = 367574473728. Its totient is φ = 65180160000.

The previous prime is 158961038969. The next prime is 158961039047. The reversal of 158961038992 is 299830169851.

158961038992 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×158961038992² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (61).

It is a self number, because there is not a number n which added to its sum of digits gives 158961038992.

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, 129131017 + ... + 129132247.

Almost surely, 2^158961038992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 158961038992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (183787236864).

158961038992 is an abundant number, since it is smaller than the sum of its proper divisors (208613434736).

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

158961038992 is a wasteful number, since it uses less digits than its factorization.

158961038992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1809 (or 1803 counting only the distinct ones).

The product of its (nonzero) digits is 8398080, while the sum is 61.

The spelling of 158961038992 in words is "one hundred fifty-eight billion, nine hundred sixty-one million, thirty-eight thousand, nine hundred ninety-two".