66673393694 has 16 divisors (see below), whose sum is σ = 104128866576. Its totient is φ = 31990430400.

The previous prime is 66673393651. The next prime is 66673393751. The reversal of 66673393694 is 49639337666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6659672 + ... + 6669675.

It is an arithmetic number, because the mean of its divisors is an integer number (6508054161).

Almost surely, 2^66673393694 is an apocalyptic number.

66673393694 is a deficient number, since it is larger than the sum of its proper divisors (37455472882).

66673393694 is a wasteful number, since it uses less digits than its factorization.

66673393694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13329451.

The product of its digits is 79361856, while the sum is 62.

The spelling of 66673393694 in words is "sixty-six billion, six hundred seventy-three million, three hundred ninety-three thousand, six hundred ninety-four".