666177563360 has 48 divisors (see below), whose sum is σ = 1573897678416. Its totient is φ = 266462020608.

The previous prime is 666177563351. The next prime is 666177563383. The reversal of 666177563360 is 63365771666.

666177563360 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 666177563296 and 666177563305.

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, 6722492 + ... + 6820868.

It is an arithmetic number, because the mean of its divisors is an integer number (32789534967).

Almost surely, 2^666177563360 is an apocalyptic number.

It is an amenable number.

666177563360 is an abundant number, since it is smaller than the sum of its proper divisors (907720115056).

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

666177563360 is a wasteful number, since it uses less digits than its factorization.

666177563360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140715 (or 140707 counting only the distinct ones).

The product of its (nonzero) digits is 17146080, while the sum is 56.

The spelling of 666177563360 in words is "six hundred sixty-six billion, one hundred seventy-seven million, five hundred sixty-three thousand, three hundred sixty".