665045252160 has 112 divisors (see below), whose sum is σ = 2111980145856. Its totient is φ = 177306642432.

The previous prime is 665045252153. The next prime is 665045252189. The reversal of 665045252160 is 61252540566.

It is a happy 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, 4460742 + ... + 4607418.

It is an arithmetic number, because the mean of its divisors is an integer number (18856965588).

Almost surely, 2^665045252160 is an apocalyptic number.

665045252160 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

665045252160 is an abundant number, since it is smaller than the sum of its proper divisors (1446934893696).

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

665045252160 is a wasteful number, since it uses less digits than its factorization.

665045252160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151420 (or 151410 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 42.

The spelling of 665045252160 in words is "six hundred sixty-five billion, forty-five million, two hundred fifty-two thousand, one hundred sixty".