11547548449 has 2 divisors, whose sum is σ = 11547548450. Its totient is φ = 11547548448.

The previous prime is 11547548447. The next prime is 11547548459. The reversal of 11547548449 is 94484574511.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8146326049 + 3401222400 = 90257^2 + 58320^2 .

It is a cyclic number.

It is not a de Polignac number, because 11547548449 - 2¹ = 11547548447 is a prime.

Together with 11547548447, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 11547548396 and 11547548405.

It is not a weakly prime, because it can be changed into another prime (11547548447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5773774224 + 5773774225.

It is an arithmetic number, because the mean of its divisors is an integer number (5773774225).

Almost surely, 2^11547548449 is an apocalyptic number.

It is an amenable number.

11547548449 is a deficient number, since it is larger than the sum of its proper divisors (1).

11547548449 is an equidigital number, since it uses as much as digits as its factorization.

11547548449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3225600, while the sum is 52.

The spelling of 11547548449 in words is "eleven billion, five hundred forty-seven million, five hundred forty-eight thousand, four hundred forty-nine".