2188233985536 has 320 divisors, whose sum is σ = 6863867112960. Its totient is φ = 685952040960.

The previous prime is 2188233985523. The next prime is 2188233985537. The reversal of 2188233985536 is 6355893328812.

2188233985536 is a `hidden beast` number, since 2 + 1 + 8 + 8 + 2 + 3 + 3 + 98 + 5 + 536 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2188233985537) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 369194605 + ... + 369200531.

It is an arithmetic number, because the mean of its divisors is an integer number (21449584728).

Almost surely, 2^{2188233985536} 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 2188233985536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3431933556480).

2188233985536 is an abundant number, since it is smaller than the sum of its proper divisors (4675633127424).

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

2188233985536 is a wasteful number, since it uses less digits than its factorization.

2188233985536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7542 (or 7520 counting only the distinct ones).

The product of its digits is 74649600, while the sum is 63.

The spelling of 2188233985536 in words is "two trillion, one hundred eighty-eight billion, two hundred thirty-three million, nine hundred eighty-five thousand, five hundred thirty-six".