11263217891 has 2 divisors, whose sum is σ = 11263217892. Its totient is φ = 11263217890.

The previous prime is 11263217881. The next prime is 11263217929. The reversal of 11263217891 is 19871236211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11263217891 - 2¹⁴ = 11263201507 is a prime.

It is not a weakly prime, because it can be changed into another prime (11263217821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5631608945 + 5631608946.

It is an arithmetic number, because the mean of its divisors is an integer number (5631608946).

Almost surely, 2^11263217891 is an apocalyptic number.

11263217891 is a deficient number, since it is larger than the sum of its proper divisors (1).

11263217891 is an equidigital number, since it uses as much as digits as its factorization.

11263217891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 41.

The spelling of 11263217891 in words is "eleven billion, two hundred sixty-three million, two hundred seventeen thousand, eight hundred ninety-one".