13564793220 has 48 divisors (see below), whose sum is σ = 41434279488. Its totient is φ = 3288434560.

The previous prime is 13564793219. The next prime is 13564793233. The reversal of 13564793220 is 2239746531.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10275699 + ... + 10277018.

It is an arithmetic number, because the mean of its divisors is an integer number (863214156).

Almost surely, 2^13564793220 is an apocalyptic number.

13564793220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13564793220 is an abundant number, since it is smaller than the sum of its proper divisors (27869486268).

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

13564793220 is a wasteful number, since it uses less digits than its factorization.

13564793220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20552740 (or 20552738 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 42.

The spelling of 13564793220 in words is "thirteen billion, five hundred sixty-four million, seven hundred ninety-three thousand, two hundred twenty".