23879385813 has 16 divisors (see below), whose sum is σ = 33056023680. Its totient is φ = 15315134016.

The previous prime is 23879385793. The next prime is 23879385823. The reversal of 23879385813 is 31858397832.

It is a happy number.

It is not a de Polignac number, because 23879385813 - 2⁹ = 23879385301 is a prime.

It is a super-2 number, since 2×23879385813² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23879385823) 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 15 ways as a sum of consecutive naturals, for example, 471345 + ... + 519542.

It is an arithmetic number, because the mean of its divisors is an integer number (2066001480).

Almost surely, 2^23879385813 is an apocalyptic number.

It is an amenable number.

23879385813 is a deficient number, since it is larger than the sum of its proper divisors (9176637867).

23879385813 is a wasteful number, since it uses less digits than its factorization.

23879385813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 991196.

The product of its digits is 8709120, while the sum is 57.

The spelling of 23879385813 in words is "twenty-three billion, eight hundred seventy-nine million, three hundred eighty-five thousand, eight hundred thirteen".