22777889921999 has 4 divisors (see below), whose sum is σ = 22777900682880. Its totient is φ = 22777879161120.

The previous prime is 22777889921987. The next prime is 22777889922023. The reversal of 22777889921999 is 99912998877722.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22777889921999 is a prime.

It is a super-2 number, since 2×22777889921999² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22777889921959) 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, 1036079 + ... + 6828560.

It is an arithmetic number, because the mean of its divisors is an integer number (5694475170720).

Almost surely, 2^{22777889921999} is an apocalyptic number.

22777889921999 is a deficient number, since it is larger than the sum of its proper divisors (10760881).

22777889921999 is an equidigital number, since it uses as much as digits as its factorization.

22777889921999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10760880.

The product of its digits is 10369949184, while the sum is 89.

The spelling of 22777889921999 in words is "twenty-two trillion, seven hundred seventy-seven billion, eight hundred eighty-nine million, nine hundred twenty-one thousand, nine hundred ninety-nine".