11489897278197 has 12 divisors (see below), whose sum is σ = 17873173544044. Its totient is φ = 7070706017280.

The previous prime is 11489897278187. The next prime is 11489897278259. The reversal of 11489897278197 is 79187279898411.

11489897278197 is a `hidden beast` number, since 1 + 1 + 4 + 89 + 89 + 7 + 278 + 197 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 5596626386961 + 5893270891236 = 2365719^2 + 2427606^2 .

It is a de Polignac number, because none of the positive numbers 2^k-11489897278197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11489897278127) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49102125004 + ... + 49102125237.

Almost surely, 2^{11489897278197} is an apocalyptic number.

It is an amenable number.

11489897278197 is a deficient number, since it is larger than the sum of its proper divisors (6383276265847).

11489897278197 is a wasteful number, since it uses less digits than its factorization.

11489897278197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98204250260 (or 98204250257 counting only the distinct ones).

The product of its digits is 1024192512, while the sum is 81.

The spelling of 11489897278197 in words is "eleven trillion, four hundred eighty-nine billion, eight hundred ninety-seven million, two hundred seventy-eight thousand, one hundred ninety-seven".