13263040997 has 2 divisors, whose sum is σ = 13263040998. Its totient is φ = 13263040996.

The previous prime is 13263040939. The next prime is 13263041039. The reversal of 13263040997 is 79904036231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10754934436 + 2508106561 = 103706^2 + 50081^2 .

It is a cyclic number.

It is not a de Polignac number, because 13263040997 - 2⁸ = 13263040741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13263040907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6631520498 + 6631520499.

It is an arithmetic number, because the mean of its divisors is an integer number (6631520499).

Almost surely, 2^13263040997 is an apocalyptic number.

It is an amenable number.

13263040997 is a deficient number, since it is larger than the sum of its proper divisors (1).

13263040997 is an equidigital number, since it uses as much as digits as its factorization.

13263040997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 244944, while the sum is 44.

The spelling of 13263040997 in words is "thirteen billion, two hundred sixty-three million, forty thousand, nine hundred ninety-seven".