15616421406600 has 96 divisors (see below), whose sum is σ = 55326750141120. Its totient is φ = 3569467749120.

The previous prime is 15616421406569. The next prime is 15616421406709. The reversal of 15616421406600 is 660412461651.

It is a happy number.

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 23 ways as a sum of consecutive naturals, for example, 1859093587 + ... + 1859101986.

It is an arithmetic number, because the mean of its divisors is an integer number (576320313970).

Almost surely, 2^{15616421406600} is an apocalyptic number.

15616421406600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15616421406600 is an abundant number, since it is smaller than the sum of its proper divisors (39710328734520).

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

15616421406600 is a wasteful number, since it uses less digits than its factorization.

15616421406600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3718195599 (or 3718195590 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 42.

The spelling of 15616421406600 in words is "fifteen trillion, six hundred sixteen billion, four hundred twenty-one million, four hundred six thousand, six hundred".