11660343449 has 2 divisors, whose sum is σ = 11660343450. Its totient is φ = 11660343448.

The previous prime is 11660343439. The next prime is 11660343547. The reversal of 11660343449 is 94434306611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7846416400 + 3813927049 = 88580^2 + 61757^2 .

It is a cyclic number.

It is not a de Polignac number, because 11660343449 - 2⁴ = 11660343433 is a prime.

It is not a weakly prime, because it can be changed into another prime (11660343439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5830171724 + 5830171725.

It is an arithmetic number, because the mean of its divisors is an integer number (5830171725).

Almost surely, 2^11660343449 is an apocalyptic number.

It is an amenable number.

11660343449 is a deficient number, since it is larger than the sum of its proper divisors (1).

11660343449 is an equidigital number, since it uses as much as digits as its factorization.

11660343449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 186624, while the sum is 41.

The spelling of 11660343449 in words is "eleven billion, six hundred sixty million, three hundred forty-three thousand, four hundred forty-nine".