11939640568 has 16 divisors (see below), whose sum is σ = 22584941280. Its totient is φ = 5916989568.

The previous prime is 11939640467. The next prime is 11939640571. The reversal of 11939640568 is 86504693911.

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, 6602880 + ... + 6604687.

It is an arithmetic number, because the mean of its divisors is an integer number (1411558830).

Almost surely, 2^11939640568 is an apocalyptic number.

It is an amenable number.

11939640568 is a deficient number, since it is larger than the sum of its proper divisors (10645300712).

11939640568 is a wasteful number, since it uses less digits than its factorization.

11939640568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13207686 (or 13207682 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 52.

The spelling of 11939640568 in words is "eleven billion, nine hundred thirty-nine million, six hundred forty thousand, five hundred sixty-eight".