11056872557 has 2 divisors, whose sum is σ = 11056872558. Its totient is φ = 11056872556.

The previous prime is 11056872487. The next prime is 11056872611. The reversal of 11056872557 is 75527865011.

11056872557 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10508095081 + 548777476 = 102509^2 + 23426^2 .

It is a cyclic number.

It is not a de Polignac number, because 11056872557 - 2¹² = 11056868461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11056874557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5528436278 + 5528436279.

It is an arithmetic number, because the mean of its divisors is an integer number (5528436279).

Almost surely, 2^11056872557 is an apocalyptic number.

It is an amenable number.

11056872557 is a deficient number, since it is larger than the sum of its proper divisors (1).

11056872557 is an equidigital number, since it uses as much as digits as its factorization.

11056872557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 588000, while the sum is 47.

The spelling of 11056872557 in words is "eleven billion, fifty-six million, eight hundred seventy-two thousand, five hundred fifty-seven".