13601220664 has 16 divisors (see below), whose sum is σ = 25503647400. Its totient is φ = 6800248032.

The previous prime is 13601220653. The next prime is 13601220697. The reversal of 13601220664 is 46602210631.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180447 + ... + 244465.

Almost surely, 2^13601220664 is an apocalyptic number.

It is an amenable number.

13601220664 is a deficient number, since it is larger than the sum of its proper divisors (11902426736).

13601220664 is a wasteful number, since it uses less digits than its factorization.

13601220664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90582 (or 90578 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The spelling of 13601220664 in words is "thirteen billion, six hundred one million, two hundred twenty thousand, six hundred sixty-four".