22402989065 has 4 divisors (see below), whose sum is σ = 26883586884. Its totient is φ = 17922391248.

The previous prime is 22402989017. The next prime is 22402989107. The reversal of 22402989065 is 56098920422.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12804280336 + 9598708729 = 113156^2 + 97973^2 .

It is a cyclic number.

It is not a de Polignac number, because 22402989065 - 2⁶ = 22402989001 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 2240298902 + ... + 2240298911.

It is an arithmetic number, because the mean of its divisors is an integer number (6720896721).

Almost surely, 2^22402989065 is an apocalyptic number.

It is an amenable number.

22402989065 is a deficient number, since it is larger than the sum of its proper divisors (4480597819).

22402989065 is an equidigital number, since it uses as much as digits as its factorization.

22402989065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4480597818.

The product of its (nonzero) digits is 622080, while the sum is 47.

The spelling of 22402989065 in words is "twenty-two billion, four hundred two million, nine hundred eighty-nine thousand, sixty-five".