11056570997 has 2 divisors, whose sum is σ = 11056570998. Its totient is φ = 11056570996.

The previous prime is 11056570981. The next prime is 11056571003. The reversal of 11056570997 is 79907565011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11031510961 + 25060036 = 105031^2 + 5006^2 .

It is a cyclic number.

It is not a de Polignac number, because 11056570997 - 2⁴ = 11056570981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11056570907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5528285498 + 5528285499.

It is an arithmetic number, because the mean of its divisors is an integer number (5528285499).

Almost surely, 2^11056570997 is an apocalyptic number.

It is an amenable number.

11056570997 is a deficient number, since it is larger than the sum of its proper divisors (1).

11056570997 is an equidigital number, since it uses as much as digits as its factorization.

11056570997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 595350, while the sum is 50.

The spelling of 11056570997 in words is "eleven billion, fifty-six million, five hundred seventy thousand, nine hundred ninety-seven".