2188383868385 has 16 divisors (see below), whose sum is σ = 3085162153920. Its totient is φ = 1469124834240.

The previous prime is 2188383868379. The next prime is 2188383868393. The reversal of 2188383868385 is 5838683838812.

It is not a de Polignac number, because 2188383868385 - 2²² = 2188379674081 is a prime.

It is a Curzon 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, 1530337655 + ... + 1530339084.

It is an arithmetic number, because the mean of its divisors is an integer number (192822634620).

Almost surely, 2^{2188383868385} is an apocalyptic number.

It is an amenable number.

2188383868385 is a deficient number, since it is larger than the sum of its proper divisors (896778285535).

2188383868385 is a wasteful number, since it uses less digits than its factorization.

2188383868385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3060676768.

The product of its digits is 424673280, while the sum is 71.

The spelling of 2188383868385 in words is "two trillion, one hundred eighty-eight billion, three hundred eighty-three million, eight hundred sixty-eight thousand, three hundred eighty-five".