12197057643 has 12 divisors (see below), whose sum is σ = 18654323688. Its totient is φ = 7653055680.

The previous prime is 12197057641. The next prime is 12197057683. The reversal of 12197057643 is 34675079121.

12197057643 is a `hidden beast` number, since 1 + 2 + 1 + 9 + 70 + 576 + 4 + 3 = 666.

It is not a de Polignac number, because 12197057643 - 2¹ = 12197057641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12197057641) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39859513 + ... + 39859818.

It is an arithmetic number, because the mean of its divisors is an integer number (1554526974).

Almost surely, 2^12197057643 is an apocalyptic number.

12197057643 is a deficient number, since it is larger than the sum of its proper divisors (6457266045).

12197057643 is a wasteful number, since it uses less digits than its factorization.

12197057643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79719354 (or 79719351 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 45.

The spelling of 12197057643 in words is "twelve billion, one hundred ninety-seven million, fifty-seven thousand, six hundred forty-three".