11983903659 has 24 divisors (see below), whose sum is σ = 21304719072. Its totient is φ = 6321179520.

The previous prime is 11983903651. The next prime is 11983903681. The reversal of 11983903659 is 95630938911.

11983903659 is a `hidden beast` number, since 1 + 198 + 3 + 90 + 365 + 9 = 666.

It is not a de Polignac number, because 11983903659 - 2³ = 11983903651 is a prime.

It is a super-2 number, since 2×11983903659² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11983903651) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7315362 + ... + 7316999.

It is an arithmetic number, because the mean of its divisors is an integer number (887696628).

Almost surely, 2^11983903659 is an apocalyptic number.

11983903659 is a deficient number, since it is larger than the sum of its proper divisors (9320815413).

11983903659 is a wasteful number, since it uses less digits than its factorization.

11983903659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14632387 (or 14632384 counting only the distinct ones).

The product of its (nonzero) digits is 1574640, while the sum is 54.

The spelling of 11983903659 in words is "eleven billion, nine hundred eighty-three million, nine hundred three thousand, six hundred fifty-nine".