666677433444 has 96 divisors (see below), whose sum is σ = 1772402688000. Its totient is φ = 193231704960.

The previous prime is 666677433427. The next prime is 666677433473. The reversal of 666677433444 is 444334776666.

It is a super-2 number, since 2×666677433444² (a number of 24 digits) contains 22 as substring.

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 31 ways as a sum of consecutive naturals, for example, 868644 + ... + 1444955.

It is an arithmetic number, because the mean of its divisors is an integer number (18462528000).

Almost surely, 2^666677433444 is an apocalyptic number.

It is an amenable number.

666677433444 is an abundant number, since it is smaller than the sum of its proper divisors (1105725254556).

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

666677433444 is a wasteful number, since it uses less digits than its factorization.

666677433444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2313713 (or 2313711 counting only the distinct ones).

The product of its digits is 146313216, while the sum is 60.

The spelling of 666677433444 in words is "six hundred sixty-six billion, six hundred seventy-seven million, four hundred thirty-three thousand, four hundred forty-four".