18366695394768 has 320 divisors, whose sum is σ = 63506214707200. Its totient is φ = 4964804928000.

The previous prime is 18366695394757. The next prime is 18366695394769. The reversal of 18366695394768 is 86749359666381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18366695394769) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 42936630 + ... + 43362282.

It is an arithmetic number, because the mean of its divisors is an integer number (198456920960).

Almost surely, 2^{18366695394768} is an apocalyptic number.

18366695394768 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18366695394768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31753107353600).

18366695394768 is an abundant number, since it is smaller than the sum of its proper divisors (45139519312432).

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

18366695394768 is a wasteful number, since it uses less digits than its factorization.

18366695394768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426447 (or 426435 counting only the distinct ones).

The product of its digits is 8465264640, while the sum is 81.

The spelling of 18366695394768 in words is "eighteen trillion, three hundred sixty-six billion, six hundred ninety-five million, three hundred ninety-four thousand, seven hundred sixty-eight".