13263242449 has 2 divisors, whose sum is σ = 13263242450. Its totient is φ = 13263242448.

The previous prime is 13263242417. The next prime is 13263242453. The reversal of 13263242449 is 94424236231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9578145424 + 3685097025 = 97868^2 + 60705^2 .

It is a cyclic number.

It is not a de Polignac number, because 13263242449 - 2⁵ = 13263242417 is a prime.

It is not a weakly prime, because it can be changed into another prime (13263242149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6631621224 + 6631621225.

It is an arithmetic number, because the mean of its divisors is an integer number (6631621225).

Almost surely, 2^13263242449 is an apocalyptic number.

It is an amenable number.

13263242449 is a deficient number, since it is larger than the sum of its proper divisors (1).

13263242449 is an equidigital number, since it uses as much as digits as its factorization.

13263242449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 248832, while the sum is 40.

The spelling of 13263242449 in words is "thirteen billion, two hundred sixty-three million, two hundred forty-two thousand, four hundred forty-nine".