22291536979 has 2 divisors, whose sum is σ = 22291536980. Its totient is φ = 22291536978.

The previous prime is 22291536959. The next prime is 22291536997. The reversal of 22291536979 is 97963519222.

Together with next prime (22291536997) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22291536979 - 2¹⁹ = 22291012691 is a prime.

It is a super-2 number, since 2×22291536979² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22291536959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11145768489 + 11145768490.

It is an arithmetic number, because the mean of its divisors is an integer number (11145768490).

Almost surely, 2^22291536979 is an apocalyptic number.

22291536979 is a deficient number, since it is larger than the sum of its proper divisors (1).

22291536979 is an equidigital number, since it uses as much as digits as its factorization.

22291536979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3674160, while the sum is 55.

The spelling of 22291536979 in words is "twenty-two billion, two hundred ninety-one million, five hundred thirty-six thousand, nine hundred seventy-nine".