158912551820 has 96 divisors (see below), whose sum is σ = 374196049920. Its totient is φ = 56188661760.

The previous prime is 158912551807. The next prime is 158912551867. The reversal of 158912551820 is 28155219851.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2071916 + ... + 2147244.

It is an arithmetic number, because the mean of its divisors is an integer number (3897875520).

Almost surely, 2^158912551820 is an apocalyptic number.

158912551820 is a gapful number since it is divisible by the number (10) 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 158912551820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187098024960).

158912551820 is an abundant number, since it is smaller than the sum of its proper divisors (215283498100).

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

158912551820 is a wasteful number, since it uses less digits than its factorization.

158912551820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75615 (or 75613 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 47.

The spelling of 158912551820 in words is "one hundred fifty-eight billion, nine hundred twelve million, five hundred fifty-one thousand, eight hundred twenty".