15823800944 has 40 divisors (see below), whose sum is σ = 35632302720. Its totient is φ = 6666683328.

The previous prime is 15823800919. The next prime is 15823800977. The reversal of 15823800944 is 44900832851.

It is a happy number.

It is a super-2 number, since 2×15823800944² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 15823800895 and 15823800904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1190714 + ... + 1203929.

It is an arithmetic number, because the mean of its divisors is an integer number (890807568).

Almost surely, 2^15823800944 is an apocalyptic number.

15823800944 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

15823800944 is an abundant number, since it is smaller than the sum of its proper divisors (19808501776).

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

15823800944 is a wasteful number, since it uses less digits than its factorization.

15823800944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2394717 (or 2394711 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 44.

The spelling of 15823800944 in words is "fifteen billion, eight hundred twenty-three million, eight hundred thousand, nine hundred forty-four".