15877008016 has 75 divisors (see below), whose sum is σ = 32986893261. Its totient is φ = 7402987008.

The previous prime is 15877008013. The next prime is 15877008079. The reversal of 15877008016 is 61080077851.

The square root of 15877008016 is 126004.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 7 ways, for example, as 1008016 + 15876000000 = 1004^2 + 126000^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15877008013) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 145660570 + ... + 145660678.

Almost surely, 2^15877008016 is an apocalyptic number.

15877008016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

15877008016 is the 126004-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15877008016

15877008016 is an abundant number, since it is smaller than the sum of its proper divisors (17109885245).

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

15877008016 is an frugal number, since it uses more digits than its factorization.

15877008016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294 (or 128 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 43.

The spelling of 15877008016 in words is "fifteen billion, eight hundred seventy-seven million, eight thousand, sixteen".