22370666891 has 2 divisors, whose sum is σ = 22370666892. Its totient is φ = 22370666890.

The previous prime is 22370666837. The next prime is 22370666897. The reversal of 22370666891 is 19866607322.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22370666891 - 2¹⁸ = 22370404747 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (22370666897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11185333445 + 11185333446.

It is an arithmetic number, because the mean of its divisors is an integer number (11185333446).

Almost surely, 2^22370666891 is an apocalyptic number.

22370666891 is a deficient number, since it is larger than the sum of its proper divisors (1).

22370666891 is an equidigital number, since it uses as much as digits as its factorization.

22370666891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1306368, while the sum is 50.

The spelling of 22370666891 in words is "twenty-two billion, three hundred seventy million, six hundred sixty-six thousand, eight hundred ninety-one".