11775999999 has 16 divisors (see below), whose sum is σ = 15739319808. Its totient is φ = 7831697952.

The previous prime is 11775999971. The next prime is 11776000007. The reversal of 11775999999 is 99999957711.

It is not a de Polignac number, because 11775999999 - 2¹⁷ = 11775868927 is a prime.

11775999999 is a modest number, since divided by 999999 gives 11775 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 11775999999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11775899999) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2936854 + ... + 2940860.

It is an arithmetic number, because the mean of its divisors is an integer number (983707488).

Almost surely, 2^11775999999 is an apocalyptic number.

11775999999 is a deficient number, since it is larger than the sum of its proper divisors (3963319809).

11775999999 is a wasteful number, since it uses less digits than its factorization.

11775999999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6134.

The product of its digits is 130203045, while the sum is 75.

The spelling of 11775999999 in words is "eleven billion, seven hundred seventy-five million, nine hundred ninety-nine thousand, nine hundred ninety-nine".