12172819614 has 16 divisors (see below), whose sum is σ = 24863632128. Its totient is φ = 3971274392.

The previous prime is 12172819601. The next prime is 12172819619. The reversal of 12172819614 is 41691827121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12172819619) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21582732 + ... + 21583295.

It is an arithmetic number, because the mean of its divisors is an integer number (1553977008).

Almost surely, 2^12172819614 is an apocalyptic number.

12172819614 is an abundant number, since it is smaller than the sum of its proper divisors (12690812514).

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

12172819614 is a wasteful number, since it uses less digits than its factorization.

12172819614 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43166079.

The product of its digits is 48384, while the sum is 42.

The spelling of 12172819614 in words is "twelve billion, one hundred seventy-two million, eight hundred nineteen thousand, six hundred fourteen".