22921295779 has 2 divisors, whose sum is σ = 22921295780. Its totient is φ = 22921295778.

The previous prime is 22921295737. The next prime is 22921295807. The reversal of 22921295779 is 97759212922.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22921295779 - 2¹⁹ = 22920771491 is a prime.

It is not a weakly prime, because it can be changed into another prime (22921295729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11460647889 + 11460647890.

It is an arithmetic number, because the mean of its divisors is an integer number (11460647890).

Almost surely, 2^22921295779 is an apocalyptic number.

22921295779 is a deficient number, since it is larger than the sum of its proper divisors (1).

22921295779 is an equidigital number, since it uses as much as digits as its factorization.

22921295779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2857680, while the sum is 55.

The spelling of 22921295779 in words is "twenty-two billion, nine hundred twenty-one million, two hundred ninety-five thousand, seven hundred seventy-nine".