22726731605 has 8 divisors (see below), whose sum is σ = 28876317912. Its totient is φ = 17111891968.

The previous prime is 22726731557. The next prime is 22726731653. The reversal of 22726731605 is 50613762722.

It is an interprime number because it is at equal distance from previous prime (22726731557) and next prime (22726731653).

It can be written as a sum of positive squares in 4 ways, for example, as 1329185764 + 21397545841 = 36458^2 + 146279^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 22726731605 - 2¹⁰ = 22726730581 is a prime.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 133686572 + ... + 133686741.

It is an arithmetic number, because the mean of its divisors is an integer number (3609539739).

Almost surely, 2^22726731605 is an apocalyptic number.

It is an amenable number.

22726731605 is a deficient number, since it is larger than the sum of its proper divisors (6149586307).

22726731605 is a wasteful number, since it uses less digits than its factorization.

22726731605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267373335.

The product of its (nonzero) digits is 211680, while the sum is 41.

The spelling of 22726731605 in words is "twenty-two billion, seven hundred twenty-six million, seven hundred thirty-one thousand, six hundred five".