13620414664 has 8 divisors (see below), whose sum is σ = 25538277510. Its totient is φ = 6810207328.

The previous prime is 13620414641. The next prime is 13620414667. The reversal of 13620414664 is 46641402631.

It can be written as a sum of positive squares in only one way, i.e., 11079246564 + 2541168100 = 105258^2 + 50410^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (13620414667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 851275909 + ... + 851275924.

Almost surely, 2^13620414664 is an apocalyptic number.

It is an amenable number.

13620414664 is a deficient number, since it is larger than the sum of its proper divisors (11917862846).

13620414664 is a wasteful number, since it uses less digits than its factorization.

13620414664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1702551839 (or 1702551835 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 37.

The spelling of 13620414664 in words is "thirteen billion, six hundred twenty million, four hundred fourteen thousand, six hundred sixty-four".