15799432320 has 768 divisors, whose sum is σ = 67578900480. Its totient is φ = 3448811520.

The previous prime is 15799432309. The next prime is 15799432321. The reversal of 15799432320 is 2323499751.

15799432320 is a `hidden beast` number, since 1 + 579 + 9 + 43 + 2 + 32 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15799432321) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 25038405 + ... + 25039035.

It is an arithmetic number, because the mean of its divisors is an integer number (87993360).

Almost surely, 2^15799432320 is an apocalyptic number.

15799432320 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 15799432320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33789450240).

15799432320 is an abundant number, since it is smaller than the sum of its proper divisors (51779468160).

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

15799432320 is an equidigital number, since it uses as much as digits as its factorization.

15799432320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 695 (or 671 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 45.

The spelling of 15799432320 in words is "fifteen billion, seven hundred ninety-nine million, four hundred thirty-two thousand, three hundred twenty".