11256427771 has 2 divisors, whose sum is σ = 11256427772. Its totient is φ = 11256427770.

The previous prime is 11256427747. The next prime is 11256427801. The reversal of 11256427771 is 17772465211.

It is a weak prime.

It is an emirp because it is prime and its reverse (17772465211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11256427771 - 2⁵ = 11256427739 is a prime.

It is not a weakly prime, because it can be changed into another prime (11256427271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5628213885 + 5628213886.

It is an arithmetic number, because the mean of its divisors is an integer number (5628213886).

Almost surely, 2^11256427771 is an apocalyptic number.

11256427771 is a deficient number, since it is larger than the sum of its proper divisors (1).

11256427771 is an equidigital number, since it uses as much as digits as its factorization.

11256427771 is an evil number, because the sum of its binary digits is even.

The product of its digits is 164640, while the sum is 43.

The spelling of 11256427771 in words is "eleven billion, two hundred fifty-six million, four hundred twenty-seven thousand, seven hundred seventy-one".