23144045447 has 2 divisors, whose sum is σ = 23144045448. Its totient is φ = 23144045446.

The previous prime is 23144045423. The next prime is 23144045579. The reversal of 23144045447 is 74454044132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23144045447 - 2²² = 23139851143 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23144045447.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23144045347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11572022723 + 11572022724.

It is an arithmetic number, because the mean of its divisors is an integer number (11572022724).

Almost surely, 2^23144045447 is an apocalyptic number.

23144045447 is a deficient number, since it is larger than the sum of its proper divisors (1).

23144045447 is an equidigital number, since it uses as much as digits as its factorization.

23144045447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 215040, while the sum is 38.

Adding to 23144045447 its reverse (74454044132), we get a palindrome (97598089579).

The spelling of 23144045447 in words is "twenty-three billion, one hundred forty-four million, forty-five thousand, four hundred forty-seven".