15616029979980 has 144 divisors (see below), whose sum is σ = 50707631729664. Its totient is φ = 4029943181760.

The previous prime is 15616029979931. The next prime is 15616029979981. The reversal of 15616029979980 is 8997992061651.

15616029979980 is a `hidden beast` number, since 1 + 5 + 6 + 1 + 602 + 9 + 9 + 7 + 9 + 9 + 8 + 0 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 15616029979899 and 15616029979908.

It is not an unprimeable number, because it can be changed into a prime (15616029979981) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 51674742 + ... + 51976061.

It is an arithmetic number, because the mean of its divisors is an integer number (352136331456).

Almost surely, 2^{15616029979980} is an apocalyptic number.

15616029979980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15616029979980 is an abundant number, since it is smaller than the sum of its proper divisors (35091601749684).

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

15616029979980 is a wasteful number, since it uses less digits than its factorization.

15616029979980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103650858 (or 103650844 counting only the distinct ones).

The product of its (nonzero) digits is 132269760, while the sum is 72.

The spelling of 15616029979980 in words is "fifteen trillion, six hundred sixteen billion, twenty-nine million, nine hundred seventy-nine thousand, nine hundred eighty".