11056562669881 has 9 divisors (see below), whose sum is σ = 11332952041069. Its totient is φ = 10786757404000.

The previous prime is 11056562669839. The next prime is 11056562669921. The reversal of 11056562669881 is 18896626565011.

The square root of 11056562669881 is 3325141.

It is a perfect power (a square), and thus also a powerful number.

11056562669881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 993329162281 + 10063233507600 = 996659^2 + 3172260^2 .

It is not a de Polignac number, because 11056562669881 - 2¹¹ = 11056562667833 is a prime.

It is a super-2 number, since 2×11056562669881² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11056562660881) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 136290231 + ... + 136371331.

Almost surely, 2^{11056562669881} is an apocalyptic number.

11056562669881 is the 3325141-st square number.

11056562669881 is the 1662571-st centered octagonal number.

It is an amenable number.

11056562669881 is a deficient number, since it is larger than the sum of its proper divisors (276389371188).

11056562669881 is an frugal number, since it uses more digits than its factorization.

11056562669881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162284 (or 81142 counting only the distinct ones).

The product of its (nonzero) digits is 37324800, while the sum is 64.

Multiplying 11056562669881 by its sum of digits (64), we get a square (707620010872384 = 26601128²).

The spelling of 11056562669881 in words is "eleven trillion, fifty-six billion, five hundred sixty-two million, six hundred sixty-nine thousand, eight hundred eighty-one".