23444143427 has 2 divisors, whose sum is σ = 23444143428. Its totient is φ = 23444143426.

The previous prime is 23444143381. The next prime is 23444143433. The reversal of 23444143427 is 72434144432.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23444143427 - 2¹² = 23444139331 is a prime.

It is a super-2 number, since 2×23444143427² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23444143127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11722071713 + 11722071714.

It is an arithmetic number, because the mean of its divisors is an integer number (11722071714).

Almost surely, 2^23444143427 is an apocalyptic number.

23444143427 is a deficient number, since it is larger than the sum of its proper divisors (1).

23444143427 is an equidigital number, since it uses as much as digits as its factorization.

23444143427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 258048, while the sum is 38.

Adding to 23444143427 its reverse (72434144432), we get a palindrome (95878287859).

The spelling of 23444143427 in words is "twenty-three billion, four hundred forty-four million, one hundred forty-three thousand, four hundred twenty-seven".