11666650929040 has 80 divisors (see below), whose sum is σ = 27281495926080. Its totient is φ = 4639762803200.

The previous prime is 11666650929019. The next prime is 11666650929047. The reversal of 11666650929040 is 4092905666611.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×11666650929040² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11666650929047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22612671 + ... + 23122849.

It is an arithmetic number, because the mean of its divisors is an integer number (341018699076).

Almost surely, 2^{11666650929040} is an apocalyptic number.

11666650929040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11666650929040 is an abundant number, since it is smaller than the sum of its proper divisors (15614844997040).

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

11666650929040 is a wasteful number, since it uses less digits than its factorization.

11666650929040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511840 (or 511834 counting only the distinct ones).

The product of its (nonzero) digits is 4199040, while the sum is 55.

The spelling of 11666650929040 in words is "eleven trillion, six hundred sixty-six billion, six hundred fifty million, nine hundred twenty-nine thousand, forty".