5666639655140 has 96 divisors (see below), whose sum is σ = 13148816728320. Its totient is φ = 2040406511616.

The previous prime is 5666639655121. The next prime is 5666639655167. The reversal of 5666639655140 is 415569366665.

It is a happy number.

It is a super-2 number, since 2×5666639655140² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 142061639 + ... + 142101521.

It is an arithmetic number, because the mean of its divisors is an integer number (136966840920).

Almost surely, 2^{5666639655140} is an apocalyptic number.

It is an amenable number.

5666639655140 is an abundant number, since it is smaller than the sum of its proper divisors (7482177073180).

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

5666639655140 is a wasteful number, since it uses less digits than its factorization.

5666639655140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58101 (or 58099 counting only the distinct ones).

The product of its (nonzero) digits is 104976000, while the sum is 62.

The spelling of 5666639655140 in words is "five trillion, six hundred sixty-six billion, six hundred thirty-nine million, six hundred fifty-five thousand, one hundred forty".