11071664257 has 2 divisors, whose sum is σ = 11071664258. Its totient is φ = 11071664256.

The previous prime is 11071664237. The next prime is 11071664371. The reversal of 11071664257 is 75246617011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10032826896 + 1038837361 = 100164^2 + 32231^2 .

It is an emirp because it is prime and its reverse (75246617011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11071664257 - 2¹¹ = 11071662209 is a prime.

It is not a weakly prime, because it can be changed into another prime (11071664237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5535832128 + 5535832129.

It is an arithmetic number, because the mean of its divisors is an integer number (5535832129).

Almost surely, 2^11071664257 is an apocalyptic number.

It is an amenable number.

11071664257 is a deficient number, since it is larger than the sum of its proper divisors (1).

11071664257 is an equidigital number, since it uses as much as digits as its factorization.

11071664257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 70560, while the sum is 40.

The spelling of 11071664257 in words is "eleven billion, seventy-one million, six hundred sixty-four thousand, two hundred fifty-seven".