18411718037216 has 36 divisors (see below), whose sum is σ = 41426510079528. Its totient is φ = 7890708778752.

The previous prime is 18411718037147. The next prime is 18411718037287. The reversal of 18411718037216 is 61273081711481.

It is a super-2 number, since 2×18411718037216² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 64076780 + ... + 64363476.

It is an arithmetic number, because the mean of its divisors is an integer number (1150736391098).

Almost surely, 2^{18411718037216} is an apocalyptic number.

18411718037216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18411718037216 is an abundant number, since it is smaller than the sum of its proper divisors (23014792042312).

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

18411718037216 is an frugal number, since it uses more digits than its factorization.

18411718037216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 573411 (or 286706 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 50.

Adding to 18411718037216 its reverse (61273081711481), we get a palindrome (79684799748697).

The spelling of 18411718037216 in words is "eighteen trillion, four hundred eleven billion, seven hundred eighteen million, thirty-seven thousand, two hundred sixteen".