3639640913905 has 32 divisors (see below), whose sum is σ = 4492969113600. Its totient is φ = 2829523352832.

The previous prime is 3639640913897. The next prime is 3639640913917. The reversal of 3639640913905 is 5093190469363.

It is a cyclic number.

It is not a de Polignac number, because 3639640913905 - 2³ = 3639640913897 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3639640913905.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8144304 + ... + 8579566.

It is an arithmetic number, because the mean of its divisors is an integer number (140405284800).

Almost surely, 2^{3639640913905} is an apocalyptic number.

It is an amenable number.

3639640913905 is a deficient number, since it is larger than the sum of its proper divisors (853328199695).

3639640913905 is a wasteful number, since it uses less digits than its factorization.

3639640913905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435673.

The product of its (nonzero) digits is 14171760, while the sum is 58.

The spelling of 3639640913905 in words is "three trillion, six hundred thirty-nine billion, six hundred forty million, nine hundred thirteen thousand, nine hundred five".