11666032573920 has 48 divisors (see below), whose sum is σ = 36748002609360. Its totient is φ = 3110942019584.

The previous prime is 11666032573919. The next prime is 11666032573967. The reversal of 11666032573920 is 2937523066611.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12152116785 + ... + 12152117744.

It is an arithmetic number, because the mean of its divisors is an integer number (765583387695).

Almost surely, 2^{11666032573920} is an apocalyptic number.

11666032573920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11666032573920 is an abundant number, since it is smaller than the sum of its proper divisors (25081970035440).

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

11666032573920 is a wasteful number, since it uses less digits than its factorization.

11666032573920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24304234547 (or 24304234539 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 51.

The spelling of 11666032573920 in words is "eleven trillion, six hundred sixty-six billion, thirty-two million, five hundred seventy-three thousand, nine hundred twenty".