665066655160 has 64 divisors (see below), whose sum is σ = 1499915361600. Its totient is φ = 265402368000.

The previous prime is 665066655091. The next prime is 665066655247. The reversal of 665066655160 is 61556660566.

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 665066655098 and 665066655107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35553810 + ... + 35572510.

It is an arithmetic number, because the mean of its divisors is an integer number (23436177525).

Almost surely, 2^665066655160 is an apocalyptic number.

It is an amenable number.

665066655160 is an abundant number, since it is smaller than the sum of its proper divisors (834848706440).

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

665066655160 is a wasteful number, since it uses less digits than its factorization.

665066655160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20752 (or 20748 counting only the distinct ones).

The product of its (nonzero) digits is 5832000, while the sum is 52.

The spelling of 665066655160 in words is "six hundred sixty-five billion, sixty-six million, six hundred fifty-five thousand, one hundred sixty".