18613966360912 has 80 divisors (see below), whose sum is σ = 40889999747520. Its totient is φ = 8137487232000.

The previous prime is 18613966360897. The next prime is 18613966360937. The reversal of 18613966360912 is 21906366931681.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22519587 + ... + 23331517.

It is an arithmetic number, because the mean of its divisors is an integer number (511124996844).

Almost surely, 2^{18613966360912} 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 18613966360912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20444999873760).

18613966360912 is an abundant number, since it is smaller than the sum of its proper divisors (22276033386608).

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

18613966360912 is a wasteful number, since it uses less digits than its factorization.

18613966360912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 817772 (or 817766 counting only the distinct ones).

The product of its (nonzero) digits is 15116544, while the sum is 61.

The spelling of 18613966360912 in words is "eighteen trillion, six hundred thirteen billion, nine hundred sixty-six million, three hundred sixty thousand, nine hundred twelve".