11807424197 has 4 divisors (see below), whose sum is σ = 11807713740. Its totient is φ = 11807134656.

The previous prime is 11807424193. The next prime is 11807424203. The reversal of 11807424197 is 79142470811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79142470811 = 43 ⋅1840522577.

It can be written as a sum of positive squares in 2 ways, for example, as 2303904001 + 9503520196 = 47999^2 + 97486^2 .

It is a cyclic number.

It is not a de Polignac number, because 11807424197 - 2² = 11807424193 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11807424193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71108 + ... + 169325.

It is an arithmetic number, because the mean of its divisors is an integer number (2951928435).

Almost surely, 2^11807424197 is an apocalyptic number.

It is an amenable number.

11807424197 is a deficient number, since it is larger than the sum of its proper divisors (289543).

11807424197 is an equidigital number, since it uses as much as digits as its factorization.

11807424197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289542.

The product of its (nonzero) digits is 112896, while the sum is 44.

The spelling of 11807424197 in words is "eleven billion, eight hundred seven million, four hundred twenty-four thousand, one hundred ninety-seven".