23805947853 has 24 divisors (see below), whose sum is σ = 35920759680. Its totient is φ = 15163964640.

The previous prime is 23805947791. The next prime is 23805947857. The reversal of 23805947853 is 35874950832.

It is not a de Polignac number, because 23805947853 - 2¹⁷ = 23805816781 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23805947853.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23805947857) 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, 127663 + ... + 252803.

It is an arithmetic number, because the mean of its divisors is an integer number (1496698320).

Almost surely, 2^23805947853 is an apocalyptic number.

23805947853 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

23805947853 is a deficient number, since it is larger than the sum of its proper divisors (12114811827).

23805947853 is a wasteful number, since it uses less digits than its factorization.

23805947853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126089 (or 126086 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 54.

The spelling of 23805947853 in words is "twenty-three billion, eight hundred five million, nine hundred forty-seven thousand, eight hundred fifty-three".