22681779999 has 16 divisors (see below), whose sum is σ = 30743791200. Its totient is φ = 14870568960.

The previous prime is 22681779977. The next prime is 22681780007. The reversal of 22681779999 is 99997718622.

It is not a de Polignac number, because 22681779999 - 2⁹ = 22681779487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22681779299) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1649119 + ... + 1662815.

It is an arithmetic number, because the mean of its divisors is an integer number (1921486950).

Almost surely, 2^22681779999 is an apocalyptic number.

22681779999 is a deficient number, since it is larger than the sum of its proper divisors (8062011201).

22681779999 is a wasteful number, since it uses less digits than its factorization.

22681779999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22810.

The product of its digits is 61725888, while the sum is 69.

The spelling of 22681779999 in words is "twenty-two billion, six hundred eighty-one million, seven hundred seventy-nine thousand, nine hundred ninety-nine".