33440374013 has 2 divisors, whose sum is σ = 33440374014. Its totient is φ = 33440374012.

The previous prime is 33440374007. The next prime is 33440374043. The reversal of 33440374013 is 31047304433.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27462455524 + 5977918489 = 165718^2 + 77317^2 .

It is an emirp because it is prime and its reverse (31047304433) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 33440374013 - 2¹² = 33440369917 is a prime.

It is a super-2 number, since 2×33440374013² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33440374043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16720187006 + 16720187007.

It is an arithmetic number, because the mean of its divisors is an integer number (16720187007).

Almost surely, 2^33440374013 is an apocalyptic number.

It is an amenable number.

33440374013 is a deficient number, since it is larger than the sum of its proper divisors (1).

33440374013 is an equidigital number, since it uses as much as digits as its factorization.

33440374013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 32.

Adding to 33440374013 its reverse (31047304433), we get a palindrome (64487678446).

The spelling of 33440374013 in words is "thirty-three billion, four hundred forty million, three hundred seventy-four thousand, thirteen".