666974833445 has 8 divisors (see below), whose sum is σ = 800375039520. Its totient is φ = 533576373840.

The previous prime is 666974833433. The next prime is 666974833451. The reversal of 666974833445 is 544338479666.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 666974833445 - 2⁴ = 666974833429 is a prime.

It is a Curzon number.

It is a congruent number.

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, 648926 + ... + 1324784.

It is an arithmetic number, because the mean of its divisors is an integer number (100046879940).

Almost surely, 2^666974833445 is an apocalyptic number.

It is an amenable number.

666974833445 is a deficient number, since it is larger than the sum of its proper divisors (133400206075).

666974833445 is a wasteful number, since it uses less digits than its factorization.

666974833445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 873235.

The product of its digits is 313528320, while the sum is 65.

The spelling of 666974833445 in words is "six hundred sixty-six billion, nine hundred seventy-four million, eight hundred thirty-three thousand, four hundred forty-five".