665117642356060 has 24 divisors (see below), whose sum is σ = 1415880570169296. Its totient is φ = 262402576709760.

The previous prime is 665117642355983. The next prime is 665117642356073. The reversal of 665117642356060 is 60653246711566.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 665117642355986 and 665117642356004.

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, 227780013046 + ... + 227780015965.

It is an arithmetic number, because the mean of its divisors is an integer number (58995023757054).

Almost surely, 2^{665117642356060} is an apocalyptic number.

It is an amenable number.

665117642356060 is an abundant number, since it is smaller than the sum of its proper divisors (750762927813236).

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

665117642356060 is a wasteful number, since it uses less digits than its factorization.

665117642356060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455560029093 (or 455560029091 counting only the distinct ones).

The product of its (nonzero) digits is 32659200, while the sum is 58.

The spelling of 665117642356060 in words is "six hundred sixty-five trillion, one hundred seventeen billion, six hundred forty-two million, three hundred fifty-six thousand, sixty".