12393579991 has 8 divisors (see below), whose sum is σ = 13349995904. Its totient is φ = 11437601760.

The previous prime is 12393579971. The next prime is 12393580007. The reversal of 12393579991 is 19997539321.

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

It is not a de Polignac number, because 12393579991 - 2⁵ = 12393579959 is a prime.

It is a super-3 number, since 3×12393579991³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12393579971) by changing a digit.

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, 49380 + ... + 165001.

It is an arithmetic number, because the mean of its divisors is an integer number (1668749488).

Almost surely, 2^12393579991 is an apocalyptic number.

12393579991 is a deficient number, since it is larger than the sum of its proper divisors (956415913).

12393579991 is a wasteful number, since it uses less digits than its factorization.

12393579991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218841.

The product of its digits is 4133430, while the sum is 58.

The spelling of 12393579991 in words is "twelve billion, three hundred ninety-three million, five hundred seventy-nine thousand, nine hundred ninety-one".