18396536562756 has 384 divisors, whose sum is σ = 56737633075200. Its totient is φ = 5097491118720.

The previous prime is 18396536562749. The next prime is 18396536562763. The reversal of 18396536562756 is 65726563569381.

18396536562756 is a `hidden beast` number, since 1 + 8 + 3 + 9 + 6 + 5 + 3 + 6 + 562 + 7 + 56 = 666.

It is an interprime number because it is at equal distance from previous prime (18396536562749) and next prime (18396536562763).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 55055235 + ... + 55388373.

It is an arithmetic number, because the mean of its divisors is an integer number (147754252800).

Almost surely, 2^{18396536562756} 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 18396536562756, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28368816537600).

18396536562756 is an abundant number, since it is smaller than the sum of its proper divisors (38341096512444).

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

18396536562756 is a wasteful number, since it uses less digits than its factorization.

18396536562756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333276 (or 333268 counting only the distinct ones).

The product of its digits is 1469664000, while the sum is 72.

The spelling of 18396536562756 in words is "eighteen trillion, three hundred ninety-six billion, five hundred thirty-six million, five hundred sixty-two thousand, seven hundred fifty-six".