11783581417 has 2 divisors, whose sum is σ = 11783581418. Its totient is φ = 11783581416.

The previous prime is 11783581363. The next prime is 11783581427. The reversal of 11783581417 is 71418538711.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7740656361 + 4042925056 = 87981^2 + 63584^2 .

It is a cyclic number.

It is not a de Polignac number, because 11783581417 - 2¹⁹ = 11783057129 is a prime.

It is a super-2 number, since 2×11783581417² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11783581427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5891790708 + 5891790709.

It is an arithmetic number, because the mean of its divisors is an integer number (5891790709).

Almost surely, 2^11783581417 is an apocalyptic number.

It is an amenable number.

11783581417 is a deficient number, since it is larger than the sum of its proper divisors (1).

11783581417 is an equidigital number, since it uses as much as digits as its factorization.

11783581417 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 188160, while the sum is 46.

The spelling of 11783581417 in words is "eleven billion, seven hundred eighty-three million, five hundred eighty-one thousand, four hundred seventeen".