13205523660656 has 10 divisors (see below), whose sum is σ = 25585702092552. Its totient is φ = 6602761830320.

The previous prime is 13205523660613. The next prime is 13205523660731. The reversal of 13205523660656 is 65606632550231.

13205523660656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 412672614380 + ... + 412672614411.

Almost surely, 2^{13205523660656} is an apocalyptic number.

13205523660656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13205523660656 is a deficient number, since it is larger than the sum of its proper divisors (12380178431896).

13205523660656 is an equidigital number, since it uses as much as digits as its factorization.

13205523660656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 825345228799 (or 825345228793 counting only the distinct ones).

The product of its (nonzero) digits is 5832000, while the sum is 50.

The spelling of 13205523660656 in words is "thirteen trillion, two hundred five billion, five hundred twenty-three million, six hundred sixty thousand, six hundred fifty-six".