18435358799 has 8 divisors (see below), whose sum is σ = 21658323792. Its totient is φ = 15470231040.

The previous prime is 18435358793. The next prime is 18435358801. The reversal of 18435358799 is 99785353481.

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

It is not a de Polignac number, because 18435358799 - 2²⁸ = 18166923343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18435358793) 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, 64459154 + ... + 64459439.

It is an arithmetic number, because the mean of its divisors is an integer number (2707290474).

Almost surely, 2^18435358799 is an apocalyptic number.

18435358799 is a deficient number, since it is larger than the sum of its proper divisors (3222964993).

18435358799 is a wasteful number, since it uses less digits than its factorization.

18435358799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128918617.

The product of its digits is 32659200, while the sum is 62.

The spelling of 18435358799 in words is "eighteen billion, four hundred thirty-five million, three hundred fifty-eight thousand, seven hundred ninety-nine".