15823837920 has 144 divisors (see below), whose sum is σ = 54788605200. Its totient is φ = 3836067840.

The previous prime is 15823837903. The next prime is 15823837943. The reversal of 15823837920 is 2973832851.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 15823837920.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 78145 + ... + 194304.

It is an arithmetic number, because the mean of its divisors is an integer number (380476425).

Almost surely, 2^15823837920 is an apocalyptic number.

15823837920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15823837920 is an abundant number, since it is smaller than the sum of its proper divisors (38964767280).

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

15823837920 is a wasteful number, since it uses less digits than its factorization.

15823837920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272489 (or 272470 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 48.

The spelling of 15823837920 in words is "fifteen billion, eight hundred twenty-three million, eight hundred thirty-seven thousand, nine hundred twenty".