13447274993 has 2 divisors, whose sum is σ = 13447274994. Its totient is φ = 13447274992.

The previous prime is 13447274989. The next prime is 13447275041. The reversal of 13447274993 is 39947274431.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13074321649 + 372953344 = 114343^2 + 19312^2 .

It is an emirp because it is prime and its reverse (39947274431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13447274993 - 2² = 13447274989 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (13447273993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6723637496 + 6723637497.

It is an arithmetic number, because the mean of its divisors is an integer number (6723637497).

Almost surely, 2^13447274993 is an apocalyptic number.

It is an amenable number.

13447274993 is a deficient number, since it is larger than the sum of its proper divisors (1).

13447274993 is an equidigital number, since it uses as much as digits as its factorization.

13447274993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4572288, while the sum is 53.

The spelling of 13447274993 in words is "thirteen billion, four hundred forty-seven million, two hundred seventy-four thousand, nine hundred ninety-three".