12397538061 has 12 divisors (see below), whose sum is σ = 17951344060. Its totient is φ = 8244815040.

The previous prime is 12397538009. The next prime is 12397538071. The reversal of 12397538061 is 16083579321.

12397538061 is a `hidden beast` number, since 1 + 23 + 97 + 538 + 0 + 6 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 6372828900 + 6024709161 = 79830^2 + 77619^2 .

It is not a de Polignac number, because 12397538061 - 2¹⁹ = 12397013773 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12397537998 and 12397538016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12397538071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1680310 + ... + 1687671.

Almost surely, 2^12397538061 is an apocalyptic number.

It is an amenable number.

12397538061 is a deficient number, since it is larger than the sum of its proper divisors (5553805999).

12397538061 is a wasteful number, since it uses less digits than its factorization.

12397538061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3368396 (or 3368393 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The spelling of 12397538061 in words is "twelve billion, three hundred ninety-seven million, five hundred thirty-eight thousand, sixty-one".