16564641367560 has 256 divisors, whose sum is σ = 61815890223360. Its totient is φ = 3488727367680.

The previous prime is 16564641367553. The next prime is 16564641367579. The reversal of 16564641367560 is 6576314646561.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a junction number, because it is equal to n+sod(n) for n = 16564641367494 and 16564641367503.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 28099617 + ... + 28683056.

It is an arithmetic number, because the mean of its divisors is an integer number (241468321185).

Almost surely, 2^{16564641367560} is an apocalyptic number.

16564641367560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16564641367560 is an abundant number, since it is smaller than the sum of its proper divisors (45251248855800).

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

16564641367560 is a wasteful number, since it uses less digits than its factorization.

16564641367560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56782728 (or 56782724 counting only the distinct ones).

The product of its (nonzero) digits is 65318400, while the sum is 60.

The spelling of 16564641367560 in words is "sixteen trillion, five hundred sixty-four billion, six hundred forty-one million, three hundred sixty-seven thousand, five hundred sixty".