22689729565 has 8 divisors (see below), whose sum is σ = 27741405528. Its totient is φ = 17809296960.

The previous prime is 22689729551. The next prime is 22689729583. The reversal of 22689729565 is 56592798622.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 7264834756 + 15424894809 = 85234^2 + 124197^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22689729565 - 2¹⁷ = 22689598493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42810546 + ... + 42811075.

It is an arithmetic number, because the mean of its divisors is an integer number (3467675691).

Almost surely, 2^22689729565 is an apocalyptic number.

It is an amenable number.

22689729565 is a deficient number, since it is larger than the sum of its proper divisors (5051675963).

22689729565 is an equidigital number, since it uses as much as digits as its factorization.

22689729565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85621679.

The product of its digits is 32659200, while the sum is 61.

The spelling of 22689729565 in words is "twenty-two billion, six hundred eighty-nine million, seven hundred twenty-nine thousand, five hundred sixty-five".