12197970541 has 4 divisors (see below), whose sum is σ = 12199693500. Its totient is φ = 12196247584.

The previous prime is 12197970539. The next prime is 12197970571. The reversal of 12197970541 is 14507979121.

12197970541 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4267355625 + 7930614916 = 65325^2 + 89054^2 .

It is a cyclic number.

It is not a de Polignac number, because 12197970541 - 2¹ = 12197970539 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12197970491 and 12197970500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12197970571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 850816 + ... + 865033.

It is an arithmetic number, because the mean of its divisors is an integer number (3049923375).

Almost surely, 2^12197970541 is an apocalyptic number.

It is an amenable number.

12197970541 is a deficient number, since it is larger than the sum of its proper divisors (1722959).

12197970541 is an equidigital number, since it uses as much as digits as its factorization.

12197970541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1722958.

The product of its (nonzero) digits is 158760, while the sum is 46.

The spelling of 12197970541 in words is "twelve billion, one hundred ninety-seven million, nine hundred seventy thousand, five hundred forty-one".