311880790666 has 16 divisors (see below), whose sum is σ = 469373725800. Its totient is φ = 155423286720.

The previous prime is 311880790643. The next prime is 311880790691. The reversal of 311880790666 is 666097088113.

It can be written as a sum of positive squares in 4 ways, for example, as 310662431641 + 1218359025 = 557371^2 + 34905^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1461556 + ... + 1661296.

Almost surely, 2^311880790666 is an apocalyptic number.

311880790666 is a deficient number, since it is larger than the sum of its proper divisors (157492935134).

311880790666 is a wasteful number, since it uses less digits than its factorization.

311880790666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202329.

The product of its (nonzero) digits is 2612736, while the sum is 55.

The spelling of 311880790666 in words is "three hundred eleven billion, eight hundred eighty million, seven hundred ninety thousand, six hundred sixty-six".