15105987000 has 256 divisors, whose sum is σ = 56396995200. Its totient is φ = 3718310400.

The previous prime is 15105986983. The next prime is 15105987011. The reversal of 15105987000 is 78950151.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

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, 329482 + ... + 372518.

Almost surely, 2^15105987000 is an apocalyptic number.

15105987000 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 15105987000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28198497600).

15105987000 is an abundant number, since it is smaller than the sum of its proper divisors (41291008200).

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

15105987000 is a wasteful number, since it uses less digits than its factorization.

15105987000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43080 (or 43060 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 36.

The spelling of 15105987000 in words is "fifteen billion, one hundred five million, nine hundred eighty-seven thousand".