15800557416 has 128 divisors (see below), whose sum is σ = 45856177920. Its totient is φ = 4443531264.

The previous prime is 15800557397. The next prime is 15800557429. The reversal of 15800557416 is 61475500851.

It is a super-2 number, since 2×15800557416² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8007406 + ... + 8009378.

It is an arithmetic number, because the mean of its divisors is an integer number (358251390).

Almost surely, 2^15800557416 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15800557416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22928088960).

15800557416 is an abundant number, since it is smaller than the sum of its proper divisors (30055620504).

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

15800557416 is a wasteful number, since it uses less digits than its factorization.

15800557416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2715 (or 2711 counting only the distinct ones).

The product of its (nonzero) digits is 168000, while the sum is 42.

The spelling of 15800557416 in words is "fifteen billion, eight hundred million, five hundred fifty-seven thousand, four hundred sixteen".