11563013449 has 12 divisors (see below), whose sum is σ = 12798145164. Its totient is φ = 10385060544.

The previous prime is 11563013447. The next prime is 11563013453. The reversal of 11563013449 is 94431036511.

It can be written as a sum of positive squares in 6 ways, for example, as 4138606224 + 7424407225 = 64332^2 + 86165^2 .

It is not a de Polignac number, because 11563013449 - 2¹ = 11563013447 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11563013447) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 307062 + ... + 342655.

It is an arithmetic number, because the mean of its divisors is an integer number (1066512097).

Almost surely, 2^11563013449 is an apocalyptic number.

It is an amenable number.

11563013449 is a deficient number, since it is larger than the sum of its proper divisors (1235131715).

11563013449 is an equidigital number, since it uses as much as digits as its factorization.

11563013449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649804 (or 649767 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 37.

The spelling of 11563013449 in words is "eleven billion, five hundred sixty-three million, thirteen thousand, four hundred forty-nine".