20444035387 has 2 divisors, whose sum is σ = 20444035388. Its totient is φ = 20444035386.

The previous prime is 20444035333. The next prime is 20444035399. The reversal of 20444035387 is 78353044402.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20444035387 - 2³¹ = 18296551739 is a prime.

It is not a weakly prime, because it can be changed into another prime (20444035487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10222017693 + 10222017694.

It is an arithmetic number, because the mean of its divisors is an integer number (10222017694).

Almost surely, 2^20444035387 is an apocalyptic number.

20444035387 is a deficient number, since it is larger than the sum of its proper divisors (1).

20444035387 is an equidigital number, since it uses as much as digits as its factorization.

20444035387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 322560, while the sum is 40.

Adding to 20444035387 its reverse (78353044402), we get a palindrome (98797079789).

The spelling of 20444035387 in words is "twenty billion, four hundred forty-four million, thirty-five thousand, three hundred eighty-seven".