13453503649 has 2 divisors, whose sum is σ = 13453503650. Its totient is φ = 13453503648.

The previous prime is 13453503607. The next prime is 13453503667. The reversal of 13453503649 is 94630535431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12753636624 + 699867025 = 112932^2 + 26455^2 .

It is a cyclic number.

It is not a de Polignac number, because 13453503649 - 2²⁷ = 13319285921 is a prime.

It is not a weakly prime, because it can be changed into another prime (13453533649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6726751824 + 6726751825.

It is an arithmetic number, because the mean of its divisors is an integer number (6726751825).

Almost surely, 2^13453503649 is an apocalyptic number.

It is an amenable number.

13453503649 is a deficient number, since it is larger than the sum of its proper divisors (1).

13453503649 is an equidigital number, since it uses as much as digits as its factorization.

13453503649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 583200, while the sum is 43.

The spelling of 13453503649 in words is "thirteen billion, four hundred fifty-three million, five hundred three thousand, six hundred forty-nine".