666673407340 has 12 divisors (see below), whose sum is σ = 1400014155456. Its totient is φ = 266669362928.

The previous prime is 666673407329. The next prime is 666673407377. The reversal of 666673407340 is 43704376666.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16666835164 + ... + 16666835203.

It is an arithmetic number, because the mean of its divisors is an integer number (116667846288).

Almost surely, 2^666673407340 is an apocalyptic number.

It is an amenable number.

666673407340 is an abundant number, since it is smaller than the sum of its proper divisors (733340748116).

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

666673407340 is a wasteful number, since it uses less digits than its factorization.

666673407340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33333670376 (or 33333670374 counting only the distinct ones).

The product of its (nonzero) digits is 9144576, while the sum is 52.

The spelling of 666673407340 in words is "six hundred sixty-six billion, six hundred seventy-three million, four hundred seven thousand, three hundred forty".