13576985520 has 80 divisors (see below), whose sum is σ = 48101326080. Its totient is φ = 3103310592.

The previous prime is 13576985501. The next prime is 13576985561. The reversal of 13576985520 is 2558967531.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

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, 4039090 + ... + 4042449.

It is an arithmetic number, because the mean of its divisors is an integer number (601266576).

Almost surely, 2^13576985520 is an apocalyptic number.

13576985520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13576985520 is an abundant number, since it is smaller than the sum of its proper divisors (34524340560).

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

13576985520 is a wasteful number, since it uses less digits than its factorization.

13576985520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8081562 (or 8081556 counting only the distinct ones).

The product of its (nonzero) digits is 2268000, while the sum is 51.

The spelling of 13576985520 in words is "thirteen billion, five hundred seventy-six million, nine hundred eighty-five thousand, five hundred twenty".