11571170249 has 2 divisors, whose sum is σ = 11571170250. Its totient is φ = 11571170248.

The previous prime is 11571170227. The next prime is 11571170287. The reversal of 11571170249 is 94207117511.

It is an a-pointer prime, because the next prime (11571170287) can be obtained adding 11571170249 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7050625024 + 4520545225 = 83968^2 + 67235^2 .

It is a cyclic number.

It is not a de Polignac number, because 11571170249 - 2¹² = 11571166153 is a prime.

It is not a weakly prime, because it can be changed into another prime (11571170749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5785585124 + 5785585125.

It is an arithmetic number, because the mean of its divisors is an integer number (5785585125).

Almost surely, 2^11571170249 is an apocalyptic number.

It is an amenable number.

11571170249 is a deficient number, since it is larger than the sum of its proper divisors (1).

11571170249 is an equidigital number, since it uses as much as digits as its factorization.

11571170249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17640, while the sum is 38.

The spelling of 11571170249 in words is "eleven billion, five hundred seventy-one million, one hundred seventy thousand, two hundred forty-nine".