18113522047776 has 288 divisors, whose sum is σ = 56431206664560. Its totient is φ = 5485731643392.

The previous prime is 18113522047769. The next prime is 18113522047801. The reversal of 18113522047776 is 67774022531181.

18113522047776 is a `hidden beast` number, since 1 + 8 + 1 + 1 + 3 + 522 + 0 + 47 + 7 + 76 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 17919812912400 + 193709135376 = 4233180^2 + 440124^2 .

It is a tau number, because it is divible by the number of its divisors (288).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1336488616 + ... + 1336502168.

Almost surely, 2^{18113522047776} is an apocalyptic number.

18113522047776 is a gapful number since it is divisible by the number (16) 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 18113522047776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28215603332280).

18113522047776 is an abundant number, since it is smaller than the sum of its proper divisors (38317684616784).

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

18113522047776 is a wasteful number, since it uses less digits than its factorization.

18113522047776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23028 (or 23017 counting only the distinct ones).

The product of its (nonzero) digits is 3951360, while the sum is 54.

The spelling of 18113522047776 in words is "eighteen trillion, one hundred thirteen billion, five hundred twenty-two million, forty-seven thousand, seven hundred seventy-six".