22370778641 has 2 divisors, whose sum is σ = 22370778642. Its totient is φ = 22370778640.

The previous prime is 22370778587. The next prime is 22370778649. The reversal of 22370778641 is 14687707322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21227324416 + 1143454225 = 145696^2 + 33815^2 .

It is a cyclic number.

It is not a de Polignac number, because 22370778641 - 2¹⁴ = 22370762257 is a prime.

It is not a weakly prime, because it can be changed into another prime (22370778649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11185389320 + 11185389321.

It is an arithmetic number, because the mean of its divisors is an integer number (11185389321).

Almost surely, 2^22370778641 is an apocalyptic number.

It is an amenable number.

22370778641 is a deficient number, since it is larger than the sum of its proper divisors (1).

22370778641 is an equidigital number, since it uses as much as digits as its factorization.

22370778641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 790272, while the sum is 47.

The spelling of 22370778641 in words is "twenty-two billion, three hundred seventy million, seven hundred seventy-eight thousand, six hundred forty-one".