13040870393 has 2 divisors, whose sum is σ = 13040870394. Its totient is φ = 13040870392.

The previous prime is 13040870389. The next prime is 13040870431. The reversal of 13040870393 is 39307804031.

It is an a-pointer prime, because the next prime (13040870431) can be obtained adding 13040870393 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11597782249 + 1443088144 = 107693^2 + 37988^2 .

It is a cyclic number.

It is not a de Polignac number, because 13040870393 - 2² = 13040870389 is a prime.

It is not a weakly prime, because it can be changed into another prime (13040870333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6520435196 + 6520435197.

It is an arithmetic number, because the mean of its divisors is an integer number (6520435197).

Almost surely, 2^13040870393 is an apocalyptic number.

It is an amenable number.

13040870393 is a deficient number, since it is larger than the sum of its proper divisors (1).

13040870393 is an equidigital number, since it uses as much as digits as its factorization.

13040870393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 38.

The spelling of 13040870393 in words is "thirteen billion, forty million, eight hundred seventy thousand, three hundred ninety-three".