18366612479 has 8 divisors (see below), whose sum is σ = 18469855872. Its totient is φ = 18263578240.

The previous prime is 18366612461. The next prime is 18366612497. The reversal of 18366612479 is 97421666381.

It is an interprime number because it is at equal distance from previous prime (18366612461) and next prime (18366612497).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18366612479 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18366612479.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18366612499) 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, 125522 + ... + 229104.

It is an arithmetic number, because the mean of its divisors is an integer number (2308731984).

Almost surely, 2^18366612479 is an apocalyptic number.

18366612479 is a deficient number, since it is larger than the sum of its proper divisors (103243393).

18366612479 is a wasteful number, since it uses less digits than its factorization.

18366612479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104577.

The product of its digits is 2612736, while the sum is 53.

The spelling of 18366612479 in words is "eighteen billion, three hundred sixty-six million, six hundred twelve thousand, four hundred seventy-nine".