11666055612 has 24 divisors (see below), whose sum is σ = 27361842256. Its totient is φ = 3868535808.

The previous prime is 11666055589. The next prime is 11666055623. The reversal of 11666055612 is 21655066611.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2516263 + ... + 2520894.

Almost surely, 2^11666055612 is an apocalyptic number.

11666055612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11666055612 is an abundant number, since it is smaller than the sum of its proper divisors (15695786644).

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

11666055612 is a wasteful number, since it uses less digits than its factorization.

11666055612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5037357 (or 5037355 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 39.

The spelling of 11666055612 in words is "eleven billion, six hundred sixty-six million, fifty-five thousand, six hundred twelve".