18635366574708 has 144 divisors (see below), whose sum is σ = 47858881869120. Its totient is φ = 5610314866176.

The previous prime is 18635366574703. The next prime is 18635366574739. The reversal of 18635366574708 is 80747566353681.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18635366574703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1712331835 + ... + 1712342717.

Almost surely, 2^{18635366574708} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18635366574708, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23929440934560).

18635366574708 is an abundant number, since it is smaller than the sum of its proper divisors (29223515294412).

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

18635366574708 is a wasteful number, since it uses less digits than its factorization.

18635366574708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15966 (or 15917 counting only the distinct ones).

The product of its (nonzero) digits is 609638400, while the sum is 69.

The spelling of 18635366574708 in words is "eighteen trillion, six hundred thirty-five billion, three hundred sixty-six million, five hundred seventy-four thousand, seven hundred eight".