15906485920 has 96 divisors (see below), whose sum is σ = 40620545280. Its totient is φ = 5851284480.

The previous prime is 15906485909. The next prime is 15906485939. The reversal of 15906485920 is 2958460951.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 549571 + ... + 577789.

It is an arithmetic number, because the mean of its divisors is an integer number (423130680).

Almost surely, 2^15906485920 is an apocalyptic number.

15906485920 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 15906485920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20310272640).

15906485920 is an abundant number, since it is smaller than the sum of its proper divisors (24714059360).

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

15906485920 is a wasteful number, since it uses less digits than its factorization.

15906485920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28518 (or 28510 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 49.

The spelling of 15906485920 in words is "fifteen billion, nine hundred six million, four hundred eighty-five thousand, nine hundred twenty".