11862650197 has 4 divisors (see below), whose sum is σ = 11904866316. Its totient is φ = 11820434080.

The previous prime is 11862650159. The next prime is 11862650213. The reversal of 11862650197 is 79105626811.

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 3587291236 + 8275358961 = 59894^2 + 90969^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11862650197 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 (11862653197) 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, 21107638 + ... + 21108199.

It is an arithmetic number, because the mean of its divisors is an integer number (2976216579).

Almost surely, 2^11862650197 is an apocalyptic number.

It is an amenable number.

11862650197 is a deficient number, since it is larger than the sum of its proper divisors (42216119).

11862650197 is an equidigital number, since it uses as much as digits as its factorization.

11862650197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42216118.

The product of its (nonzero) digits is 181440, while the sum is 46.

The spelling of 11862650197 in words is "eleven billion, eight hundred sixty-two million, six hundred fifty thousand, one hundred ninety-seven".