12444802589 has 2 divisors, whose sum is σ = 12444802590. Its totient is φ = 12444802588.

The previous prime is 12444802547. The next prime is 12444802603. The reversal of 12444802589 is 98520844421.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7693044100 + 4751758489 = 87710^2 + 68933^2 .

It is a cyclic number.

It is not a de Polignac number, because 12444802589 - 2³² = 8149835293 is a prime.

It is a super-2 number, since 2×12444802589² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12444802289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6222401294 + 6222401295.

It is an arithmetic number, because the mean of its divisors is an integer number (6222401295).

Almost surely, 2^12444802589 is an apocalyptic number.

It is an amenable number.

12444802589 is a deficient number, since it is larger than the sum of its proper divisors (1).

12444802589 is an equidigital number, since it uses as much as digits as its factorization.

12444802589 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 737280, while the sum is 47.

The spelling of 12444802589 in words is "twelve billion, four hundred forty-four million, eight hundred two thousand, five hundred eighty-nine".