11543563729 has 2 divisors, whose sum is σ = 11543563730. Its totient is φ = 11543563728.

The previous prime is 11543563721. The next prime is 11543563739. The reversal of 11543563729 is 92736534511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9327696400 + 2215867329 = 96580^2 + 47073^2 .

It is a cyclic number.

It is not a de Polignac number, because 11543563729 - 2³ = 11543563721 is a prime.

It is not a weakly prime, because it can be changed into another prime (11543563721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5771781864 + 5771781865.

It is an arithmetic number, because the mean of its divisors is an integer number (5771781865).

Almost surely, 2^11543563729 is an apocalyptic number.

It is an amenable number.

11543563729 is a deficient number, since it is larger than the sum of its proper divisors (1).

11543563729 is an equidigital number, since it uses as much as digits as its factorization.

11543563729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 680400, while the sum is 46.

The spelling of 11543563729 in words is "eleven billion, five hundred forty-three million, five hundred sixty-three thousand, seven hundred twenty-nine".