16564573230740 has 24 divisors (see below), whose sum is σ = 34785921228072. Its totient is φ = 6625768826880.

The previous prime is 16564573230713. The next prime is 16564573230781. The reversal of 16564573230740 is 4703237546561.

It can be written as a sum of positive squares in 4 ways, for example, as 1980026093956 + 14584547136784 = 1407134^2 + 3818972^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1499141 + ... + 5947820.

It is an arithmetic number, because the mean of its divisors is an integer number (1449413384503).

Almost surely, 2^{16564573230740} is an apocalyptic number.

16564573230740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16564573230740 is an abundant number, since it is smaller than the sum of its proper divisors (18221347997332).

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

16564573230740 is a wasteful number, since it uses less digits than its factorization.

16564573230740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7558187 (or 7558185 counting only the distinct ones).

The product of its (nonzero) digits is 12700800, while the sum is 53.

The spelling of 16564573230740 in words is "sixteen trillion, five hundred sixty-four billion, five hundred seventy-three million, two hundred thirty thousand, seven hundred forty".