11932660639 has 4 divisors (see below), whose sum is σ = 11933012056. Its totient is φ = 11932309224.

The previous prime is 11932660609. The next prime is 11932660643. The reversal of 11932660639 is 93606623911.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11932660639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11932660609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118584 + ... + 194749.

It is an arithmetic number, because the mean of its divisors is an integer number (2983253014).

Almost surely, 2^11932660639 is an apocalyptic number.

11932660639 is a deficient number, since it is larger than the sum of its proper divisors (351417).

11932660639 is an equidigital number, since it uses as much as digits as its factorization.

11932660639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351416.

The product of its (nonzero) digits is 314928, while the sum is 46.

The spelling of 11932660639 in words is "eleven billion, nine hundred thirty-two million, six hundred sixty thousand, six hundred thirty-nine".