13444423501 has 2 divisors, whose sum is σ = 13444423502. Its totient is φ = 13444423500.

The previous prime is 13444423481. The next prime is 13444423507. The reversal of 13444423501 is 10532444431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7894322500 + 5550101001 = 88850^2 + 74499^2 .

It is a cyclic number.

It is not a de Polignac number, because 13444423501 - 2⁷ = 13444423373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13444423507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6722211750 + 6722211751.

It is an arithmetic number, because the mean of its divisors is an integer number (6722211751).

Almost surely, 2^13444423501 is an apocalyptic number.

It is an amenable number.

13444423501 is a deficient number, since it is larger than the sum of its proper divisors (1).

13444423501 is an equidigital number, since it uses as much as digits as its factorization.

13444423501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23040, while the sum is 31.

Adding to 13444423501 its reverse (10532444431), we get a palindrome (23976867932).

The spelling of 13444423501 in words is "thirteen billion, four hundred forty-four million, four hundred twenty-three thousand, five hundred one".