23155774573 has 4 divisors (see below), whose sum is σ = 23171285628. Its totient is φ = 23140263520.

The previous prime is 23155774553. The next prime is 23155774583. The reversal of 23155774573 is 37547755132.

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 19941111369 + 3214663204 = 141213^2 + 56698^2 .

It is a cyclic number.

It is not a de Polignac number, because 23155774573 - 2⁵ = 23155774541 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23155774553) 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, 7753288 + ... + 7756273.

It is an arithmetic number, because the mean of its divisors is an integer number (5792821407).

Almost surely, 2^23155774573 is an apocalyptic number.

It is an amenable number.

23155774573 is a deficient number, since it is larger than the sum of its proper divisors (15511055).

23155774573 is a wasteful number, since it uses less digits than its factorization.

23155774573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15511054.

The product of its digits is 3087000, while the sum is 49.

The spelling of 23155774573 in words is "twenty-three billion, one hundred fifty-five million, seven hundred seventy-four thousand, five hundred seventy-three".