23420258573 has 6 divisors (see below), whose sum is σ = 24878960106. Its totient is φ = 22042596032.

The previous prime is 23420258569. The next prime is 23420258621. The reversal of 23420258573 is 37585202432.

It can be written as a sum of positive squares in 3 ways, for example, as 9885728329 + 13534530244 = 99427^2 + 116338^2 .

It is not a de Polignac number, because 23420258573 - 2² = 23420258569 is a prime.

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 23420258573.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23420258273) 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 5 ways as a sum of consecutive naturals, for example, 40519190 + ... + 40519767.

It is an arithmetic number, because the mean of its divisors is an integer number (4146493351).

Almost surely, 2^23420258573 is an apocalyptic number.

It is an amenable number.

23420258573 is a deficient number, since it is larger than the sum of its proper divisors (1458701533).

23420258573 is an equidigital number, since it uses as much as digits as its factorization.

23420258573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81038991 (or 81038974 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 41.

The spelling of 23420258573 in words is "twenty-three billion, four hundred twenty million, two hundred fifty-eight thousand, five hundred seventy-three".