12146965849 has 4 divisors (see below), whose sum is σ = 12254461236. Its totient is φ = 12039470464.

The previous prime is 12146965837. The next prime is 12146965861. The reversal of 12146965849 is 94856964121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94856964121 = 37 ⋅2563701733.

It is an interprime number because it is at equal distance from previous prime (12146965837) and next prime (12146965861).

It can be written as a sum of positive squares in 2 ways, for example, as 5411809225 + 6735156624 = 73565^2 + 82068^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12146965849 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 12146965849.

It is not an unprimeable number, because it can be changed into a prime (12146965049) 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, 53747524 + ... + 53747749.

It is an arithmetic number, because the mean of its divisors is an integer number (3063615309).

Almost surely, 2^12146965849 is an apocalyptic number.

It is an amenable number.

12146965849 is a deficient number, since it is larger than the sum of its proper divisors (107495387).

12146965849 is a wasteful number, since it uses less digits than its factorization.

12146965849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107495386.

The product of its digits is 3732480, while the sum is 55.

The spelling of 12146965849 in words is "twelve billion, one hundred forty-six million, nine hundred sixty-five thousand, eight hundred forty-nine".