11736472217 has 2 divisors, whose sum is σ = 11736472218. Its totient is φ = 11736472216.

The previous prime is 11736472193. The next prime is 11736472247. The reversal of 11736472217 is 71227463711.

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., 10493134096 + 1243338121 = 102436^2 + 35261^2 .

It is an emirp because it is prime and its reverse (71227463711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11736472217 - 2⁸ = 11736471961 is a prime.

It is not a weakly prime, because it can be changed into another prime (11736472247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5868236108 + 5868236109.

It is an arithmetic number, because the mean of its divisors is an integer number (5868236109).

Almost surely, 2^11736472217 is an apocalyptic number.

It is an amenable number.

11736472217 is a deficient number, since it is larger than the sum of its proper divisors (1).

11736472217 is an equidigital number, since it uses as much as digits as its factorization.

11736472217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 98784, while the sum is 41.

The spelling of 11736472217 in words is "eleven billion, seven hundred thirty-six million, four hundred seventy-two thousand, two hundred seventeen".