11056003657 has 2 divisors, whose sum is σ = 11056003658. Its totient is φ = 11056003656.

The previous prime is 11056003619. The next prime is 11056003667. The reversal of 11056003657 is 75630065011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7487613961 + 3568389696 = 86531^2 + 59736^2 .

It is an emirp because it is prime and its reverse (75630065011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11056003657 - 2¹¹ = 11056001609 is a prime.

It is not a weakly prime, because it can be changed into another prime (11056003667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5528001828 + 5528001829.

It is an arithmetic number, because the mean of its divisors is an integer number (5528001829).

Almost surely, 2^11056003657 is an apocalyptic number.

It is an amenable number.

11056003657 is a deficient number, since it is larger than the sum of its proper divisors (1).

11056003657 is an equidigital number, since it uses as much as digits as its factorization.

11056003657 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18900, while the sum is 34.

Adding to 11056003657 its reverse (75630065011), we get a palindrome (86686068668).

The spelling of 11056003657 in words is "eleven billion, fifty-six million, three thousand, six hundred fifty-seven".