15817816816060 has 96 divisors (see below), whose sum is σ = 38368541877120. Its totient is φ = 5365579235328.

The previous prime is 15817816816057. The next prime is 15817816816187. The reversal of 15817816816060 is 6061861871851.

It is a junction number, because it is equal to n+sod(n) for n = 15817816815986 and 15817816816004.

It is a congruent number.

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, 3577036 + ... + 6665644.

It is an arithmetic number, because the mean of its divisors is an integer number (399672311220).

Almost surely, 2^{15817816816060} is an apocalyptic number.

15817816816060 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 15817816816060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19184270938560).

15817816816060 is an abundant number, since it is smaller than the sum of its proper divisors (22550725061060).

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

15817816816060 is a wasteful number, since it uses less digits than its factorization.

15817816816060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3089015 (or 3089013 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 58.

The spelling of 15817816816060 in words is "fifteen trillion, eight hundred seventeen billion, eight hundred sixteen million, eight hundred sixteen thousand, sixty".