18418608677599 has 8 divisors (see below), whose sum is σ = 19836675687920. Its totient is φ = 17000720375616.

The previous prime is 18418608677563. The next prime is 18418608677617. The reversal of 18418608677599 is 99577680681481.

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

It is a cyclic number.

It is not a de Polignac number, because 18418608677599 - 2²⁷ = 18418474459871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18418608677999) 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, 44462982 + ... + 44875315.

It is an arithmetic number, because the mean of its divisors is an integer number (2479584460990).

Almost surely, 2^{18418608677599} is an apocalyptic number.

18418608677599 is a deficient number, since it is larger than the sum of its proper divisors (1418067010321).

18418608677599 is a wasteful number, since it uses less digits than its factorization.

18418608677599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89354169.

The product of its (nonzero) digits is 1463132160, while the sum is 79.

The spelling of 18418608677599 in words is "eighteen trillion, four hundred eighteen billion, six hundred eight million, six hundred seventy-seven thousand, five hundred ninety-nine".