11766579975 has 72 divisors (see below), whose sum is σ = 21845114720. Its totient is φ = 6049416960.

The previous prime is 11766579967. The next prime is 11766580013. The reversal of 11766579975 is 57997566711.

It is not a de Polignac number, because 11766579975 - 2³ = 11766579967 is a prime.

It is a super-3 number, since 3×11766579975³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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 71 ways as a sum of consecutive naturals, for example, 900942 + ... + 913908.

Almost surely, 2^11766579975 is an apocalyptic number.

11766579975 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11766579975 is a deficient number, since it is larger than the sum of its proper divisors (10078534745).

11766579975 is a wasteful number, since it uses less digits than its factorization.

11766579975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13129 (or 13121 counting only the distinct ones).

The product of its digits is 25004700, while the sum is 63.

The spelling of 11766579975 in words is "eleven billion, seven hundred sixty-six million, five hundred seventy-nine thousand, nine hundred seventy-five".