11891030116 has 27 divisors (see below), whose sum is σ = 24209848089. Its totient is φ = 5095501488.

The previous prime is 11891030113. The next prime is 11891030159. The reversal of 11891030116 is 61103019811.

The square root of 11891030116 is 109046.

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

It can be written as a sum of positive squares in only one way, i.e., 7030151716 + 4860878400 = 83846^2 + 69720^2 .

It is not an unprimeable number, because it can be changed into a prime (11891030113) 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, 1522750 + ... + 1530538.

Almost surely, 2^11891030116 is an apocalyptic number.

11891030116 is the 109046-th square number.

It is an amenable number.

11891030116 is an abundant number, since it is smaller than the sum of its proper divisors (12318817973).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11891030116 is an frugal number, since it uses more digits than its factorization.

11891030116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15596 (or 7798 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 31.

Multiplying 11891030116 by its product of nonzero digits (1296), we get a square (15410775030336 = 3925656²).

Adding to 11891030116 its reverse (61103019811), we get a palindrome (72994049927).

The spelling of 11891030116 in words is "eleven billion, eight hundred ninety-one million, thirty thousand, one hundred sixteen".