23023642523309 has 4 divisors (see below), whose sum is σ = 23339034886716. Its totient is φ = 22708250159904.

The previous prime is 23023642523281. The next prime is 23023642523359. The reversal of 23023642523309 is 90332524632032.

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 20179097173225 + 2844545350084 = 4492115^2 + 1686578^2 .

It is a cyclic number.

It is not a de Polignac number, because 23023642523309 - 2¹⁶ = 23023642457773 is a prime.

It is a super-2 number, since 2×23023642523309² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23023642523309.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23023642523359) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157696181594 + ... + 157696181739.

It is an arithmetic number, because the mean of its divisors is an integer number (5834758721679).

Almost surely, 2^{23023642523309} is an apocalyptic number.

It is an amenable number.

23023642523309 is a deficient number, since it is larger than the sum of its proper divisors (315392363407).

23023642523309 is an equidigital number, since it uses as much as digits as its factorization.

23023642523309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315392363406.

The product of its (nonzero) digits is 1399680, while the sum is 44.

The spelling of 23023642523309 in words is "twenty-three trillion, twenty-three billion, six hundred forty-two million, five hundred twenty-three thousand, three hundred nine".