18432799679 has 8 divisors (see below), whose sum is σ = 21981972480. Its totient is φ = 15112605816.

The previous prime is 18432799657. The next prime is 18432799709. The reversal of 18432799679 is 97699723481.

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

It is a de Polignac number, because none of the positive numbers 2^k-18432799679 is a prime.

It is a super-2 number, since 2×18432799679² (a number of 21 digits) contains 22 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 (18432799079) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57244559 + ... + 57244880.

It is an arithmetic number, because the mean of its divisors is an integer number (2747746560).

Almost surely, 2^18432799679 is an apocalyptic number.

18432799679 is a deficient number, since it is larger than the sum of its proper divisors (3549172801).

18432799679 is a wasteful number, since it uses less digits than its factorization.

18432799679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114489469.

The product of its digits is 41150592, while the sum is 65.

The spelling of 18432799679 in words is "eighteen billion, four hundred thirty-two million, seven hundred ninety-nine thousand, six hundred seventy-nine".