66673393695 has 72 divisors (see below), whose sum is σ = 123766873776. Its totient is φ = 33088382976.

The previous prime is 66673393651. The next prime is 66673393751. The reversal of 66673393695 is 59639337666.

It is not a de Polignac number, because 66673393695 - 2¹⁰ = 66673392671 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 6054064 + ... + 6065066.

It is an arithmetic number, because the mean of its divisors is an integer number (1718984358).

Almost surely, 2^66673393695 is an apocalyptic number.

66673393695 is a deficient number, since it is larger than the sum of its proper divisors (57093480081).

66673393695 is a wasteful number, since it uses less digits than its factorization.

66673393695 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11209 (or 11117 counting only the distinct ones).

The product of its digits is 99202320, while the sum is 63.

The spelling of 66673393695 in words is "sixty-six billion, six hundred seventy-three million, three hundred ninety-three thousand, six hundred ninety-five".