23384728197 has 18 divisors (see below), whose sum is σ = 34715549778. Its totient is φ = 15168464352.

The previous prime is 23384728183. The next prime is 23384728273. The reversal of 23384728197 is 79182748332.

23384728197 is a `hidden beast` number, since 2 + 3 + 3 + 8 + 472 + 81 + 97 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 18106124481 + 5278603716 = 134559^2 + 72654^2 .

It is not a de Polignac number, because 23384728197 - 2⁴ = 23384728181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23384728117) 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 17 ways as a sum of consecutive naturals, for example, 936658 + ... + 961299.

Almost surely, 2^23384728197 is an apocalyptic number.

It is an amenable number.

23384728197 is a deficient number, since it is larger than the sum of its proper divisors (11330821581).

23384728197 is a wasteful number, since it uses less digits than its factorization.

23384728197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1898037 (or 1897997 counting only the distinct ones).

The product of its digits is 4064256, while the sum is 54.

The spelling of 23384728197 in words is "twenty-three billion, three hundred eighty-four million, seven hundred twenty-eight thousand, one hundred ninety-seven".