11561040603124 has 12 divisors (see below), whose sum is σ = 20232330528004. Its totient is φ = 5780374737984.

The previous prime is 11561040603097. The next prime is 11561040603127. The reversal of 11561040603124 is 42130604016511.

It can be written as a sum of positive squares in 2 ways, for example, as 10467619036900 + 1093421566224 = 3235370^2 + 1045668^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 11561040603124.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11561040603127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36212097 + ... + 36529960.

Almost surely, 2^{11561040603124} is an apocalyptic number.

It is an amenable number.

11561040603124 is a deficient number, since it is larger than the sum of its proper divisors (8671289924880).

11561040603124 is a wasteful number, since it uses less digits than its factorization.

11561040603124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72781794 (or 72781792 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

Adding to 11561040603124 its reverse (42130604016511), we get a palindrome (53691644619635).

The spelling of 11561040603124 in words is "eleven trillion, five hundred sixty-one billion, forty million, six hundred three thousand, one hundred twenty-four".