308490090666 has 32 divisors (see below), whose sum is σ = 640775085120. Its totient is φ = 98926667136.

The previous prime is 308490090647. The next prime is 308490090707. The reversal of 308490090666 is 666090094803.

308490090666 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×308490090666² (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, 7786956 + ... + 7826471.

It is an arithmetic number, because the mean of its divisors is an integer number (20024221410).

Almost surely, 2^308490090666 is an apocalyptic number.

308490090666 is an abundant number, since it is smaller than the sum of its proper divisors (332284994454).

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

308490090666 is a wasteful number, since it uses less digits than its factorization.

308490090666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15613558.

The product of its (nonzero) digits is 1679616, while the sum is 51.

The spelling of 308490090666 in words is "three hundred eight billion, four hundred ninety million, ninety thousand, six hundred sixty-six".