13664205664402 has 8 divisors (see below), whose sum is σ = 20521581382512. Its totient is φ = 6823678536900.

The previous prime is 13664205664393. The next prime is 13664205664427. The reversal of 13664205664402 is 20446650246631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4212145624 + ... + 4212148867.

It is an arithmetic number, because the mean of its divisors is an integer number (2565197672814).

Almost surely, 2^{13664205664402} is an apocalyptic number.

13664205664402 is a deficient number, since it is larger than the sum of its proper divisors (6857375718110).

13664205664402 is an equidigital number, since it uses as much as digits as its factorization.

13664205664402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8424295304.

The product of its (nonzero) digits is 4976640, while the sum is 49.

The spelling of 13664205664402 in words is "thirteen trillion, six hundred sixty-four billion, two hundred five million, six hundred sixty-four thousand, four hundred two".