2188422704636 has 48 divisors (see below), whose sum is σ = 4530933167040. Its totient is φ = 904921812480.

The previous prime is 2188422704621. The next prime is 2188422704759. The reversal of 2188422704636 is 6364072248812.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 223226 + ... + 2103966.

It is an arithmetic number, because the mean of its divisors is an integer number (94394440980).

Almost surely, 2^{2188422704636} 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 2188422704636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2265466583520).

2188422704636 is an abundant number, since it is smaller than the sum of its proper divisors (2342510462404).

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

2188422704636 is a wasteful number, since it uses less digits than its factorization.

2188422704636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1882214 (or 1882212 counting only the distinct ones).

The product of its (nonzero) digits is 6193152, while the sum is 53.

The spelling of 2188422704636 in words is "two trillion, one hundred eighty-eight billion, four hundred twenty-two million, seven hundred four thousand, six hundred thirty-six".