18079642336 has 96 divisors (see below), whose sum is σ = 41393721600. Its totient is φ = 7612932096.

The previous prime is 18079642333. The next prime is 18079642349. The reversal of 18079642336 is 63324697081.

It is a self number, because there is not a number n which added to its sum of digits gives 18079642336.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18079642333) 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, 6737251 + ... + 6739933.

It is an arithmetic number, because the mean of its divisors is an integer number (431184600).

Almost surely, 2^18079642336 is an apocalyptic number.

18079642336 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18079642336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20696860800).

18079642336 is an abundant number, since it is smaller than the sum of its proper divisors (23314079264).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18079642336 is a wasteful number, since it uses less digits than its factorization.

18079642336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3216 (or 3208 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 49.

The spelling of 18079642336 in words is "eighteen billion, seventy-nine million, six hundred forty-two thousand, three hundred thirty-six".