11172840111234 has 12 divisors (see below), whose sum is σ = 24207820241046. Its totient is φ = 3724280037072.

The previous prime is 11172840111221. The next prime is 11172840111287. The reversal of 11172840111234 is 43211104827111.

11172840111234 is a `hidden beast` number, since 1 + 1 + 1 + 7 + 2 + 8 + 401 + 11 + 234 = 666.

It can be written as a sum of positive squares in only one way, i.e., 11048995944009 + 123844167225 = 3324003^2 + 351915^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 310356669739 + ... + 310356669774.

Almost surely, 2^{11172840111234} is an apocalyptic number.

11172840111234 is an abundant number, since it is smaller than the sum of its proper divisors (13034980129812).

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

11172840111234 is a wasteful number, since it uses less digits than its factorization.

11172840111234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 620713339521 (or 620713339518 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 36.

Adding to 11172840111234 its reverse (43211104827111), we get a palindrome (54383944938345).

The spelling of 11172840111234 in words is "eleven trillion, one hundred seventy-two billion, eight hundred forty million, one hundred eleven thousand, two hundred thirty-four".