11166666597 has 24 divisors (see below), whose sum is σ = 17441813376. Its totient is φ = 6857456256.

The previous prime is 11166666557. The next prime is 11166666607. The reversal of 11166666597 is 79566666111.

It is a happy number.

It is not a de Polignac number, because 11166666597 - 2²⁰ = 11165618021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11166666547) 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 23 ways as a sum of consecutive naturals, for example, 769243 + ... + 783624.

It is an arithmetic number, because the mean of its divisors is an integer number (726742224).

Almost surely, 2^11166666597 is an apocalyptic number.

11166666597 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

11166666597 is a deficient number, since it is larger than the sum of its proper divisors (6275146779).

11166666597 is a wasteful number, since it uses less digits than its factorization.

11166666597 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1552937 (or 1552934 counting only the distinct ones).

The product of its digits is 2449440, while the sum is 54.

The spelling of 11166666597 in words is "eleven billion, one hundred sixty-six million, six hundred sixty-six thousand, five hundred ninety-seven".