665452117610 has 32 divisors (see below), whose sum is σ = 1368968929920. Its totient is φ = 228148535232.

The previous prime is 665452117601. The next prime is 665452117639. The reversal of 665452117610 is 16711254566.

It is a happy number.

665452117610 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×665452117610² (a number of 24 digits) contains 22 as substring.

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, 2802032 + ... + 3030228.

It is an arithmetic number, because the mean of its divisors is an integer number (42780279060).

Almost surely, 2^665452117610 is an apocalyptic number.

665452117610 is an abundant number, since it is smaller than the sum of its proper divisors (703516812310).

665452117610 is a wasteful number, since it uses less digits than its factorization.

665452117610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269870.

The product of its (nonzero) digits is 302400, while the sum is 44.

The spelling of 665452117610 in words is "six hundred sixty-five billion, four hundred fifty-two million, one hundred seventeen thousand, six hundred ten".