11547343439 has 2 divisors, whose sum is σ = 11547343440. Its totient is φ = 11547343438.

The previous prime is 11547343429. The next prime is 11547343441. The reversal of 11547343439 is 93434374511.

11547343439 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 is a cyclic number.

It is not a de Polignac number, because 11547343439 - 2⁸ = 11547343183 is a prime.

It is a super-2 number, since 2×11547343439² (a number of 21 digits) contains 22 as substring.

Together with 11547343441, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11547343439.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11547343429) 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, 5773671719 + 5773671720.

It is an arithmetic number, because the mean of its divisors is an integer number (5773671720).

Almost surely, 2^11547343439 is an apocalyptic number.

11547343439 is a deficient number, since it is larger than the sum of its proper divisors (1).

11547343439 is an equidigital number, since it uses as much as digits as its factorization.

11547343439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 544320, while the sum is 44.

The spelling of 11547343439 in words is "eleven billion, five hundred forty-seven million, three hundred forty-three thousand, four hundred thirty-nine".