12117635650 has 12 divisors (see below), whose sum is σ = 22538802402. Its totient is φ = 4847054240.

The previous prime is 12117635641. The next prime is 12117635653. The reversal of 12117635650 is 5653671121.

It can be written as a sum of positive squares in 3 ways, for example, as 10055476729 + 2062158921 = 100277^2 + 45411^2 .

It is not an unprimeable number, because it can be changed into a prime (12117635653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 121176307 + ... + 121176406.

Almost surely, 2^12117635650 is an apocalyptic number.

12117635650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12117635650 is a deficient number, since it is larger than the sum of its proper divisors (10421166752).

12117635650 is a wasteful number, since it uses less digits than its factorization.

12117635650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242352725 (or 242352720 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 37.

The spelling of 12117635650 in words is "twelve billion, one hundred seventeen million, six hundred thirty-five thousand, six hundred fifty".