22402239985 has 4 divisors (see below), whose sum is σ = 26882687988. Its totient is φ = 17921791984.

The previous prime is 22402239983. The next prime is 22402240013. The reversal of 22402239985 is 58993220422.

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 7933999329 + 14468240656 = 89073^2 + 120284^2 .

It is a cyclic number.

It is not a de Polignac number, because 22402239985 - 2¹ = 22402239983 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22402239983) 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 in 3 ways as a sum of consecutive naturals, for example, 2240223994 + ... + 2240224003.

It is an arithmetic number, because the mean of its divisors is an integer number (6720671997).

Almost surely, 2^22402239985 is an apocalyptic number.

It is an amenable number.

22402239985 is a deficient number, since it is larger than the sum of its proper divisors (4480448003).

22402239985 is an equidigital number, since it uses as much as digits as its factorization.

22402239985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4480448002.

The product of its (nonzero) digits is 622080, while the sum is 46.

The spelling of 22402239985 in words is "twenty-two billion, four hundred two million, two hundred thirty-nine thousand, nine hundred eighty-five".