11147385761 has 2 divisors, whose sum is σ = 11147385762. Its totient is φ = 11147385760.

The previous prime is 11147385731. The next prime is 11147385779. The reversal of 11147385761 is 16758374111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9226755136 + 1920630625 = 96056^2 + 43825^2 .

It is a cyclic number.

It is not a de Polignac number, because 11147385761 - 2¹⁴ = 11147369377 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 (11147385721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5573692880 + 5573692881.

It is an arithmetic number, because the mean of its divisors is an integer number (5573692881).

Almost surely, 2^11147385761 is an apocalyptic number.

It is an amenable number.

11147385761 is a deficient number, since it is larger than the sum of its proper divisors (1).

11147385761 is an equidigital number, since it uses as much as digits as its factorization.

11147385761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 141120, while the sum is 44.

The spelling of 11147385761 in words is "eleven billion, one hundred forty-seven million, three hundred eighty-five thousand, seven hundred sixty-one".