11009850857 has 2 divisors, whose sum is σ = 11009850858. Its totient is φ = 11009850856.

The previous prime is 11009850851. The next prime is 11009850883. The reversal of 11009850857 is 75805890011.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10425226816 + 584624041 = 102104^2 + 24179^2 .

It is an emirp because it is prime and its reverse (75805890011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11009850857 - 2⁶ = 11009850793 is a prime.

It is not a weakly prime, because it can be changed into another prime (11009850851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5504925428 + 5504925429.

It is an arithmetic number, because the mean of its divisors is an integer number (5504925429).

Almost surely, 2^11009850857 is an apocalyptic number.

It is an amenable number.

11009850857 is a deficient number, since it is larger than the sum of its proper divisors (1).

11009850857 is an equidigital number, since it uses as much as digits as its factorization.

11009850857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 100800, while the sum is 44.

The spelling of 11009850857 in words is "eleven billion, nine million, eight hundred fifty thousand, eight hundred fifty-seven".