12194498765 has 4 divisors (see below), whose sum is σ = 14633398524. Its totient is φ = 9755599008.

The previous prime is 12194498749. The next prime is 12194498783. The reversal of 12194498765 is 56789449121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56789449121 = 457 ⋅124265753.

It can be written as a sum of positive squares in 2 ways, for example, as 1238899204 + 10955599561 = 35198^2 + 104669^2 .

It is a cyclic number.

It is not a de Polignac number, because 12194498765 - 2⁴ = 12194498749 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12194498765.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1219449872 + ... + 1219449881.

It is an arithmetic number, because the mean of its divisors is an integer number (3658349631).

Almost surely, 2^12194498765 is an apocalyptic number.

It is an amenable number.

12194498765 is a deficient number, since it is larger than the sum of its proper divisors (2438899759).

12194498765 is an equidigital number, since it uses as much as digits as its factorization.

12194498765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2438899758.

The product of its digits is 4354560, while the sum is 56.

The spelling of 12194498765 in words is "twelve billion, one hundred ninety-four million, four hundred ninety-eight thousand, seven hundred sixty-five".