15156977920 has 576 divisors, whose sum is σ = 47093760000. Its totient is φ = 4649508864.

The previous prime is 15156977909. The next prime is 15156977923. The reversal of 15156977920 is 2977965151.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15156977923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 191860441 + ... + 191860519.

It is an arithmetic number, because the mean of its divisors is an integer number (81760000).

Almost surely, 2^15156977920 is an apocalyptic number.

15156977920 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 15156977920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23546880000).

15156977920 is an abundant number, since it is smaller than the sum of its proper divisors (31936782080).

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

15156977920 is an equidigital number, since it uses as much as digits as its factorization.

15156977920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163 (or 135 counting only the distinct ones).

The product of its (nonzero) digits is 1190700, while the sum is 52.

The spelling of 15156977920 in words is "fifteen billion, one hundred fifty-six million, nine hundred seventy-seven thousand, nine hundred twenty".