23442639171921 has 24 divisors (see below), whose sum is σ = 34292910080000. Its totient is φ = 15429386336832.

The previous prime is 23442639171911. The next prime is 23442639171929. The reversal of 23442639171921 is 12917193624432.

23442639171921 is a `hidden beast` number, since 2 + 3 + 44 + 26 + 391 + 7 + 192 + 1 = 666.

It is not a de Polignac number, because 23442639171921 - 2⁶ = 23442639171857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23442639171929) 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 23 ways as a sum of consecutive naturals, for example, 7812045 + ... + 10388133.

Almost surely, 2^{23442639171921} is an apocalyptic number.

It is an amenable number.

23442639171921 is a deficient number, since it is larger than the sum of its proper divisors (10850270908079).

23442639171921 is a wasteful number, since it uses less digits than its factorization.

23442639171921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2588973 (or 2588970 counting only the distinct ones).

The product of its digits is 3919104, while the sum is 54.

The spelling of 23442639171921 in words is "twenty-three trillion, four hundred forty-two billion, six hundred thirty-nine million, one hundred seventy-one thousand, nine hundred twenty-one".