13618604506 has 16 divisors (see below), whose sum is σ = 22414367304. Its totient is φ = 6166914624.

The previous prime is 13618604437. The next prime is 13618604539. The reversal of 13618604506 is 60540681631.

It can be written as a sum of positive squares in 4 ways, for example, as 7312815225 + 6305789281 = 85515^2 + 79409^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4940061 + ... + 4942816.

Almost surely, 2^13618604506 is an apocalyptic number.

13618604506 is a deficient number, since it is larger than the sum of its proper divisors (8795762798).

13618604506 is a wasteful number, since it uses less digits than its factorization.

13618604506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9882945.

The product of its (nonzero) digits is 103680, while the sum is 40.

The spelling of 13618604506 in words is "thirteen billion, six hundred eighteen million, six hundred four thousand, five hundred six".