15808797000 has 256 divisors, whose sum is σ = 57188851200. Its totient is φ = 4032230400.

The previous prime is 15808796959. The next prime is 15808797019. The reversal of 15808797000 is 79780851.

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

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 608272 + ... + 633728.

It is an arithmetic number, because the mean of its divisors is an integer number (223393950).

Almost surely, 2^15808797000 is an apocalyptic number.

15808797000 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 15808797000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28594425600).

15808797000 is an abundant number, since it is smaller than the sum of its proper divisors (41380054200).

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

15808797000 is a wasteful number, since it uses less digits than its factorization.

15808797000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25510 (or 25490 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 45.

The spelling of 15808797000 in words is "fifteen billion, eight hundred eight million, seven hundred ninety-seven thousand".