13621560136 has 16 divisors (see below), whose sum is σ = 25551205740. Its totient is φ = 6807905280.

The previous prime is 13621560119. The next prime is 13621560187. The reversal of 13621560136 is 63106512631.

It can be written as a sum of positive squares in 2 ways, for example, as 12057357636 + 1564202500 = 109806^2 + 39550^2 .

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, 339145 + ... + 377176.

Almost surely, 2^13621560136 is an apocalyptic number.

It is an amenable number.

13621560136 is a deficient number, since it is larger than the sum of its proper divisors (11929645604).

13621560136 is a wasteful number, since it uses less digits than its factorization.

13621560136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 718704 (or 718700 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 34.

The spelling of 13621560136 in words is "thirteen billion, six hundred twenty-one million, five hundred sixty thousand, one hundred thirty-six".