15244040023 has 2 divisors, whose sum is σ = 15244040024. Its totient is φ = 15244040022.

The previous prime is 15244040011. The next prime is 15244040051. The reversal of 15244040023 is 32004044251.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (32004044251) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15244040023 - 2⁵ = 15244039991 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 15244040023.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15244040083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7622020011 + 7622020012.

It is an arithmetic number, because the mean of its divisors is an integer number (7622020012).

Almost surely, 2^15244040023 is an apocalyptic number.

15244040023 is a deficient number, since it is larger than the sum of its proper divisors (1).

15244040023 is an equidigital number, since it uses as much as digits as its factorization.

15244040023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3840, while the sum is 25.

Adding to 15244040023 its reverse (32004044251), we get a palindrome (47248084274).

The spelling of 15244040023 in words is "fifteen billion, two hundred forty-four million, forty thousand, twenty-three".