11571941564693 has 2 divisors, whose sum is σ = 11571941564694. Its totient is φ = 11571941564692.

The previous prime is 11571941564671. The next prime is 11571941564713. The reversal of 11571941564693 is 39646514917511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11567331562084 + 4610002609 = 3401078^2 + 67897^2 .

It is a cyclic number.

It is not a de Polignac number, because 11571941564693 - 2¹⁴ = 11571941548309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11571941569693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5785970782346 + 5785970782347.

It is an arithmetic number, because the mean of its divisors is an integer number (5785970782347).

Almost surely, 2^{11571941564693} is an apocalyptic number.

It is an amenable number.

11571941564693 is a deficient number, since it is larger than the sum of its proper divisors (1).

11571941564693 is an equidigital number, since it uses as much as digits as its factorization.

11571941564693 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24494400, while the sum is 62.

The spelling of 11571941564693 in words is "eleven trillion, five hundred seventy-one billion, nine hundred forty-one million, five hundred sixty-four thousand, six hundred ninety-three".