23826743397 has 24 divisors (see below), whose sum is σ = 36629760024. Its totient is φ = 14872633344.

The previous prime is 23826743383. The next prime is 23826743399. The reversal of 23826743397 is 79334762832.

23826743397 is a `hidden beast` number, since 238 + 2 + 6 + 74 + 339 + 7 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2933197281 + 20893546116 = 54159^2 + 144546^2 .

It is not a de Polignac number, because 23826743397 - 2¹⁴ = 23826727013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23826743399) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 373918 + ... + 432975.

It is an arithmetic number, because the mean of its divisors is an integer number (1526240001).

Almost surely, 2^23826743397 is an apocalyptic number.

It is an amenable number.

23826743397 is a deficient number, since it is larger than the sum of its proper divisors (12803016627).

23826743397 is a wasteful number, since it uses less digits than its factorization.

23826743397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 807109 (or 807106 counting only the distinct ones).

The product of its digits is 9144576, while the sum is 54.

The spelling of 23826743397 in words is "twenty-three billion, eight hundred twenty-six million, seven hundred forty-three thousand, three hundred ninety-seven".