22245566677889 has 4 divisors (see below), whose sum is σ = 22610248098900. Its totient is φ = 21880885256880.

The previous prime is 22245566677877. The next prime is 22245566677891. The reversal of 22245566677889 is 98877666554222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8491978810000 + 13753587867889 = 2914100^2 + 3708583^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22245566677889 is a prime.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (22245566677289) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 182340710414 + ... + 182340710535.

It is an arithmetic number, because the mean of its divisors is an integer number (5652562024725).

Almost surely, 2^{22245566677889} is an apocalyptic number.

It is an amenable number.

22245566677889 is a deficient number, since it is larger than the sum of its proper divisors (364681421011).

22245566677889 is an equidigital number, since it uses as much as digits as its factorization.

22245566677889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364681421010.

The product of its digits is 4877107200, while the sum is 77.

The spelling of 22245566677889 in words is "twenty-two trillion, two hundred forty-five billion, five hundred sixty-six million, six hundred seventy-seven thousand, eight hundred eighty-nine".