22591451489 has 2 divisors, whose sum is σ = 22591451490. Its totient is φ = 22591451488.

The previous prime is 22591451473. The next prime is 22591451503. The reversal of 22591451489 is 98415419522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20860891489 + 1730560000 = 144433^2 + 41600^2 .

It is a cyclic number.

It is not a de Polignac number, because 22591451489 - 2⁴ = 22591451473 is a prime.

It is not a weakly prime, because it can be changed into another prime (22591451429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11295725744 + 11295725745.

It is an arithmetic number, because the mean of its divisors is an integer number (11295725745).

Almost surely, 2^22591451489 is an apocalyptic number.

It is an amenable number.

22591451489 is a deficient number, since it is larger than the sum of its proper divisors (1).

22591451489 is an equidigital number, since it uses as much as digits as its factorization.

22591451489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1036800, while the sum is 50.

The spelling of 22591451489 in words is "twenty-two billion, five hundred ninety-one million, four hundred fifty-one thousand, four hundred eighty-nine".