11205739871 has 2 divisors, whose sum is σ = 11205739872. Its totient is φ = 11205739870.

The previous prime is 11205739841. The next prime is 11205739879. The reversal of 11205739871 is 17893750211.

It is a strong prime.

It is an emirp because it is prime and its reverse (17893750211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11205739871 - 2²² = 11201545567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11205739879) 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, 5602869935 + 5602869936.

It is an arithmetic number, because the mean of its divisors is an integer number (5602869936).

Almost surely, 2^11205739871 is an apocalyptic number.

11205739871 is a deficient number, since it is larger than the sum of its proper divisors (1).

11205739871 is an equidigital number, since it uses as much as digits as its factorization.

11205739871 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 105840, while the sum is 44.

The spelling of 11205739871 in words is "eleven billion, two hundred five million, seven hundred thirty-nine thousand, eight hundred seventy-one".