79423831693 has 16 divisors (see below), whose sum is σ = 82495687680. Its totient is φ = 76374619776.

The previous prime is 79423831691. The next prime is 79423831699. The reversal of 79423831693 is 39613832497.

It is a cyclic number.

It is not a de Polignac number, because 79423831693 - 2¹ = 79423831691 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79423831691) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13131396 + ... + 13137442.

It is an arithmetic number, because the mean of its divisors is an integer number (5155980480).

Almost surely, 2^79423831693 is an apocalyptic number.

It is an amenable number.

79423831693 is a deficient number, since it is larger than the sum of its proper divisors (3071855987).

79423831693 is a wasteful number, since it uses less digits than its factorization.

79423831693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7836.

The product of its digits is 5878656, while the sum is 55.

The spelling of 79423831693 in words is "seventy-nine billion, four hundred twenty-three million, eight hundred thirty-one thousand, six hundred ninety-three".