11457537449 has 2 divisors, whose sum is σ = 11457537450. Its totient is φ = 11457537448.

The previous prime is 11457537433. The next prime is 11457537461. The reversal of 11457537449 is 94473575411.

11457537449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9928727449 + 1528810000 = 99643^2 + 39100^2 .

It is a cyclic number.

It is not a de Polignac number, because 11457537449 - 2⁴ = 11457537433 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11457537397 and 11457537406.

It is not a weakly prime, because it can be changed into another prime (11457537419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5728768724 + 5728768725.

It is an arithmetic number, because the mean of its divisors is an integer number (5728768725).

Almost surely, 2^11457537449 is an apocalyptic number.

It is an amenable number.

11457537449 is a deficient number, since it is larger than the sum of its proper divisors (1).

11457537449 is an equidigital number, since it uses as much as digits as its factorization.

11457537449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2116800, while the sum is 50.

The spelling of 11457537449 in words is "eleven billion, four hundred fifty-seven million, five hundred thirty-seven thousand, four hundred forty-nine".