15636423880 has 256 divisors, whose sum is σ = 46613698560. Its totient is φ = 4570214400.

The previous prime is 15636423857. The next prime is 15636423919. The reversal of 15636423880 is 8832463651.

It is a self number, because there is not a number n which added to its sum of digits gives 15636423880.

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, 27383995 + ... + 27384565.

It is an arithmetic number, because the mean of its divisors is an integer number (182084760).

Almost surely, 2^15636423880 is an apocalyptic number.

15636423880 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 15636423880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23306849280).

15636423880 is an abundant number, since it is smaller than the sum of its proper divisors (30977274680).

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

15636423880 is a wasteful number, since it uses less digits than its factorization.

15636423880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1140 (or 1136 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 46.

The spelling of 15636423880 in words is "fifteen billion, six hundred thirty-six million, four hundred twenty-three thousand, eight hundred eighty".