11715275749 has 2 divisors, whose sum is σ = 11715275750. Its totient is φ = 11715275748.

The previous prime is 11715275731. The next prime is 11715275779. The reversal of 11715275749 is 94757251711.

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., 7294355649 + 4420920100 = 85407^2 + 66490^2 .

It is a cyclic number.

It is not a de Polignac number, because 11715275749 - 2¹¹ = 11715273701 is a prime.

It is a super-2 number, since 2×11715275749² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11715275779) 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, 5857637874 + 5857637875.

It is an arithmetic number, because the mean of its divisors is an integer number (5857637875).

Almost surely, 2^11715275749 is an apocalyptic number.

It is an amenable number.

11715275749 is a deficient number, since it is larger than the sum of its proper divisors (1).

11715275749 is an equidigital number, since it uses as much as digits as its factorization.

11715275749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 617400, while the sum is 49.

The spelling of 11715275749 in words is "eleven billion, seven hundred fifteen million, two hundred seventy-five thousand, seven hundred forty-nine".