11977569699 has 32 divisors (see below), whose sum is σ = 16459960320. Its totient is φ = 7744704000.

The previous prime is 11977569683. The next prime is 11977569707. The reversal of 11977569699 is 99696577911.

It is not a de Polignac number, because 11977569699 - 2⁴ = 11977569683 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11977569649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3875947 + ... + 3879035.

It is an arithmetic number, because the mean of its divisors is an integer number (514373760).

Almost surely, 2^11977569699 is an apocalyptic number.

11977569699 is a deficient number, since it is larger than the sum of its proper divisors (4482390621).

11977569699 is a wasteful number, since it uses less digits than its factorization.

11977569699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3451.

The product of its digits is 57868020, while the sum is 69.

The spelling of 11977569699 in words is "eleven billion, nine hundred seventy-seven million, five hundred sixty-nine thousand, six hundred ninety-nine".