15897073920 has 864 divisors, whose sum is σ = 65218382208. Its totient is φ = 3269984256.

The previous prime is 15897073897. The next prime is 15897073981. The reversal of 15897073920 is 2937079851.

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 163887312 + ... + 163887408.

Almost surely, 2^15897073920 is an apocalyptic number.

15897073920 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 15897073920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32609191104).

15897073920 is an abundant number, since it is smaller than the sum of its proper divisors (49321308288).

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

15897073920 is a wasteful number, since it uses less digits than its factorization.

15897073920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215 (or 194 counting only the distinct ones).

The product of its (nonzero) digits is 952560, while the sum is 51.

The spelling of 15897073920 in words is "fifteen billion, eight hundred ninety-seven million, seventy-three thousand, nine hundred twenty".