11666400600 has 48 divisors (see below), whose sum is σ = 36165843720. Its totient is φ = 3111040000.

The previous prime is 11666400589. The next prime is 11666400601. The reversal of 11666400600 is 600466611.

It is a super-2 number, since 2×11666400600² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11666400601) 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 11 ways as a sum of consecutive naturals, for example, 9721401 + ... + 9722600.

Almost surely, 2^11666400600 is an apocalyptic number.

11666400600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11666400600 is an abundant number, since it is smaller than the sum of its proper divisors (24499443120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11666400600 is a wasteful number, since it uses less digits than its factorization.

11666400600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19444020 (or 19444011 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The spelling of 11666400600 in words is "eleven billion, six hundred sixty-six million, four hundred thousand, six hundred".