158187320892 has 144 divisors (see below), whose sum is σ = 444146976000. Its totient is φ = 47244688128.

The previous prime is 158187320881. The next prime is 158187320917. The reversal of 158187320892 is 298023781851.

158187320892 is a `hidden beast` number, since 1 + 58 + 187 + 320 + 8 + 92 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1343659 + ... + 1456637.

It is an arithmetic number, because the mean of its divisors is an integer number (3084354000).

Almost surely, 2^158187320892 is an apocalyptic number.

158187320892 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 158187320892, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (222073488000).

158187320892 is an abundant number, since it is smaller than the sum of its proper divisors (285959655108).

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

158187320892 is a wasteful number, since it uses less digits than its factorization.

158187320892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113120 (or 113115 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 54.

The spelling of 158187320892 in words is "one hundred fifty-eight billion, one hundred eighty-seven million, three hundred twenty thousand, eight hundred ninety-two".