23444555789 has 4 divisors (see below), whose sum is σ = 24823647324. Its totient is φ = 22065464256.

The previous prime is 23444555773. The next prime is 23444555803. The reversal of 23444555789 is 98755544432.

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 15161735689 + 8282820100 = 123133^2 + 91010^2 .

It is a cyclic number.

It is not a de Polignac number, because 23444555789 - 2⁴ = 23444555773 is a prime.

It is a super-2 number, since 2×23444555789² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23444555749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 689545742 + ... + 689545775.

It is an arithmetic number, because the mean of its divisors is an integer number (6205911831).

Almost surely, 2^23444555789 is an apocalyptic number.

It is an amenable number.

23444555789 is a deficient number, since it is larger than the sum of its proper divisors (1379091535).

23444555789 is a wasteful number, since it uses less digits than its factorization.

23444555789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1379091534.

The product of its digits is 24192000, while the sum is 56.

The spelling of 23444555789 in words is "twenty-three billion, four hundred forty-four million, five hundred fifty-five thousand, seven hundred eighty-nine".