308677709666 has 16 divisors (see below), whose sum is σ = 490665160440. Its totient is φ = 145382267520.

The previous prime is 308677709597. The next prime is 308677709671. The reversal of 308677709666 is 666907776803.

It can be written as a sum of positive squares in 4 ways, for example, as 125383269025 + 183294440641 = 354095^2 + 428129^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64900421 + ... + 64905176.

Almost surely, 2^308677709666 is an apocalyptic number.

308677709666 is a deficient number, since it is larger than the sum of its proper divisors (181987450774).

308677709666 is a wasteful number, since it uses less digits than its factorization.

308677709666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129805669.

The product of its (nonzero) digits is 96018048, while the sum is 65.

The spelling of 308677709666 in words is "three hundred eight billion, six hundred seventy-seven million, seven hundred nine thousand, six hundred sixty-six".