2113288688869 has 4 divisors (see below), whose sum is σ = 2131990358796. Its totient is φ = 2094587018944.

The previous prime is 2113288688867. The next prime is 2113288688977. The reversal of 2113288688869 is 9688868823112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 670371212644 + 1442917476225 = 818762^2 + 1201215^2 .

It is a cyclic number.

It is not a de Polignac number, because 2113288688869 - 2¹ = 2113288688867 is a prime.

It is a super-2 number, since 2×2113288688869² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2113288688798 and 2113288688807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2113288688867) 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, 9350834794 + ... + 9350835019.

It is an arithmetic number, because the mean of its divisors is an integer number (532997589699).

Almost surely, 2^{2113288688869} is an apocalyptic number.

It is an amenable number.

2113288688869 is a deficient number, since it is larger than the sum of its proper divisors (18701669927).

2113288688869 is a wasteful number, since it uses less digits than its factorization.

2113288688869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18701669926.

The product of its digits is 127401984, while the sum is 70.

The spelling of 2113288688869 in words is "two trillion, one hundred thirteen billion, two hundred eighty-eight million, six hundred eighty-eight thousand, eight hundred sixty-nine".