13920816601 has 4 divisors (see below), whose sum is σ = 14183473572. Its totient is φ = 13658159632.

The previous prime is 13920816509. The next prime is 13920816607. The reversal of 13920816601 is 10661802931.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10297378576 + 3623438025 = 101476^2 + 60195^2 .

It is a cyclic number.

It is not a de Polignac number, because 13920816601 - 2⁷ = 13920816473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13920816607) by changing a digit.

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, 131328406 + ... + 131328511.

It is an arithmetic number, because the mean of its divisors is an integer number (3545868393).

Almost surely, 2^13920816601 is an apocalyptic number.

It is an amenable number.

13920816601 is a deficient number, since it is larger than the sum of its proper divisors (262656971).

13920816601 is an equidigital number, since it uses as much as digits as its factorization.

13920816601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262656970.

The product of its (nonzero) digits is 15552, while the sum is 37.

The spelling of 13920816601 in words is "thirteen billion, nine hundred twenty million, eight hundred sixteen thousand, six hundred one".