11386743521 has 2 divisors, whose sum is σ = 11386743522. Its totient is φ = 11386743520.

The previous prime is 11386743509. The next prime is 11386743551. The reversal of 11386743521 is 12534768311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11359296400 + 27447121 = 106580^2 + 5239^2 .

It is a cyclic number.

It is not a de Polignac number, because 11386743521 - 2¹⁴ = 11386727137 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (11386743551) 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, 5693371760 + 5693371761.

It is an arithmetic number, because the mean of its divisors is an integer number (5693371761).

Almost surely, 2^11386743521 is an apocalyptic number.

It is an amenable number.

11386743521 is a deficient number, since it is larger than the sum of its proper divisors (1).

11386743521 is an equidigital number, since it uses as much as digits as its factorization.

11386743521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 41.

The spelling of 11386743521 in words is "eleven billion, three hundred eighty-six million, seven hundred forty-three thousand, five hundred twenty-one".