666122727053660 has 24 divisors (see below), whose sum is σ = 1399039326218016. Its totient is φ = 266414500458560.

The previous prime is 666122727053639. The next prime is 666122727053681. The reversal of 666122727053660 is 66350727221666.

It is an interprime number because it is at equal distance from previous prime (666122727053639) and next prime (666122727053681).

It is a self number, because there is not a number n which added to its sum of digits gives 666122727053660.

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, 2161739771 + ... + 2162047890.

It is an arithmetic number, because the mean of its divisors is an integer number (58293305259084).

Almost surely, 2^{666122727053660} is an apocalyptic number.

It is an amenable number.

666122727053660 is an abundant number, since it is smaller than the sum of its proper divisors (732916599164356).

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

666122727053660 is a wasteful number, since it uses less digits than its factorization.

666122727053660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4323795373 (or 4323795371 counting only the distinct ones).

The product of its (nonzero) digits is 45722880, while the sum is 59.

The spelling of 666122727053660 in words is "six hundred sixty-six trillion, one hundred twenty-two billion, seven hundred twenty-seven million, fifty-three thousand, six hundred sixty".