23503221449 has 2 divisors, whose sum is σ = 23503221450. Its totient is φ = 23503221448.

The previous prime is 23503221433. The next prime is 23503221461. The reversal of 23503221449 is 94412230532.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22754214025 + 749007424 = 150845^2 + 27368^2 .

It is a cyclic number.

It is not a de Polignac number, because 23503221449 - 2⁴ = 23503221433 is a prime.

It is not a weakly prime, because it can be changed into another prime (23503221479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11751610724 + 11751610725.

It is an arithmetic number, because the mean of its divisors is an integer number (11751610725).

Almost surely, 2^23503221449 is an apocalyptic number.

It is an amenable number.

23503221449 is a deficient number, since it is larger than the sum of its proper divisors (1).

23503221449 is an equidigital number, since it uses as much as digits as its factorization.

23503221449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 35.

The spelling of 23503221449 in words is "twenty-three billion, five hundred three million, two hundred twenty-one thousand, four hundred forty-nine".