13453136449 has 2 divisors, whose sum is σ = 13453136450. Its totient is φ = 13453136448.

The previous prime is 13453136363. The next prime is 13453136461. The reversal of 13453136449 is 94463135431.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8646210225 + 4806926224 = 92985^2 + 69332^2 .

It is a cyclic number.

It is not a de Polignac number, because 13453136449 - 2²⁵ = 13419582017 is a prime.

It is not a weakly prime, because it can be changed into another prime (13453136479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6726568224 + 6726568225.

It is an arithmetic number, because the mean of its divisors is an integer number (6726568225).

Almost surely, 2^13453136449 is an apocalyptic number.

It is an amenable number.

13453136449 is a deficient number, since it is larger than the sum of its proper divisors (1).

13453136449 is an equidigital number, since it uses as much as digits as its factorization.

13453136449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 466560, while the sum is 43.

The spelling of 13453136449 in words is "thirteen billion, four hundred fifty-three million, one hundred thirty-six thousand, four hundred forty-nine".