23443518457 has 8 divisors (see below), whose sum is σ = 23509240200. Its totient is φ = 23377845120.

The previous prime is 23443518431. The next prime is 23443518463. The reversal of 23443518457 is 75481534432.

It can be written as a sum of positive squares in 4 ways, for example, as 3250824256 + 20192694201 = 57016^2 + 142101^2 .

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 23443518457 - 2²³ = 23435129849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23543518457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1097919 + ... + 1119067.

It is an arithmetic number, because the mean of its divisors is an integer number (2938655025).

Almost surely, 2^23443518457 is an apocalyptic number.

It is an amenable number.

23443518457 is a deficient number, since it is larger than the sum of its proper divisors (65721743).

23443518457 is a wasteful number, since it uses less digits than its factorization.

23443518457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24203.

The product of its digits is 1612800, while the sum is 46.

The spelling of 23443518457 in words is "twenty-three billion, four hundred forty-three million, five hundred eighteen thousand, four hundred fifty-seven".