11871835249 has 2 divisors, whose sum is σ = 11871835250. Its totient is φ = 11871835248.

The previous prime is 11871835219. The next prime is 11871835309. The reversal of 11871835249 is 94253817811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7960208400 + 3911626849 = 89220^2 + 62543^2 .

It is an emirp because it is prime and its reverse (94253817811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11871835249 - 2⁷ = 11871835121 is a prime.

It is not a weakly prime, because it can be changed into another prime (11871835219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5935917624 + 5935917625.

It is an arithmetic number, because the mean of its divisors is an integer number (5935917625).

Almost surely, 2^11871835249 is an apocalyptic number.

It is an amenable number.

11871835249 is a deficient number, since it is larger than the sum of its proper divisors (1).

11871835249 is an equidigital number, since it uses as much as digits as its factorization.

11871835249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 483840, while the sum is 49.

The spelling of 11871835249 in words is "eleven billion, eight hundred seventy-one million, eight hundred thirty-five thousand, two hundred forty-nine".