667111992309 has 64 divisors (see below), whose sum is σ = 1148344199680. Its totient is φ = 374851100160.

The previous prime is 667111992301. The next prime is 667111992361. The reversal of 667111992309 is 903299111766.

It is not a de Polignac number, because 667111992309 - 2³ = 667111992301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667111992301) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 58942119 + ... + 58953435.

It is an arithmetic number, because the mean of its divisors is an integer number (17942878120).

Almost surely, 2^667111992309 is an apocalyptic number.

It is an amenable number.

667111992309 is a deficient number, since it is larger than the sum of its proper divisors (481232207371).

667111992309 is a wasteful number, since it uses less digits than its factorization.

667111992309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16507 (or 16501 counting only the distinct ones).

The product of its (nonzero) digits is 1102248, while the sum is 54.

The spelling of 667111992309 in words is "six hundred sixty-seven billion, one hundred eleven million, nine hundred ninety-two thousand, three hundred nine".