666502090190 has 32 divisors (see below), whose sum is σ = 1206568621440. Its totient is φ = 265075891200.

The previous prime is 666502090183. The next prime is 666502090207. The reversal of 666502090190 is 91090205666.

It is a super-2 number, since 2×666502090190² (a number of 24 digits) contains 22 as substring.

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, 9956030 + ... + 10022750.

It is an arithmetic number, because the mean of its divisors is an integer number (37705269420).

Almost surely, 2^666502090190 is an apocalyptic number.

666502090190 is a deficient number, since it is larger than the sum of its proper divisors (540066531250).

666502090190 is a wasteful number, since it uses less digits than its factorization.

666502090190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72428.

The product of its (nonzero) digits is 174960, while the sum is 44.

The spelling of 666502090190 in words is "six hundred sixty-six billion, five hundred two million, ninety thousand, one hundred ninety".