13565694080 has 32 divisors (see below), whose sum is σ = 32430488940. Its totient is φ = 5426277376.

The previous prime is 13565694049. The next prime is 13565694089. The reversal of 13565694080 is 8049656531.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 13063575616 + 502118464 = 114296^2 + 22408^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (13565694089) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10597559 + ... + 10598838.

Almost surely, 2^13565694080 is an apocalyptic number.

13565694080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13565694080 is an abundant number, since it is smaller than the sum of its proper divisors (18864794860).

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

13565694080 is an equidigital number, since it uses as much as digits as its factorization.

13565694080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21196416 (or 21196404 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 47.

The spelling of 13565694080 in words is "thirteen billion, five hundred sixty-five million, six hundred ninety-four thousand, eighty".