23461173891 has 24 divisors (see below), whose sum is σ = 34989992960. Its totient is φ = 15132582000.

The previous prime is 23461173887. The next prime is 23461173941. The reversal of 23461173891 is 19837116432.

23461173891 is a `hidden beast` number, since 23 + 4 + 611 + 7 + 3 + 8 + 9 + 1 = 666.

It is not a de Polignac number, because 23461173891 - 2² = 23461173887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23461171891) 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 23 ways as a sum of consecutive naturals, for example, 1605066 + ... + 1619616.

Almost surely, 2^23461173891 is an apocalyptic number.

23461173891 is a deficient number, since it is larger than the sum of its proper divisors (11528819069).

23461173891 is a wasteful number, since it uses less digits than its factorization.

23461173891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20367 (or 20364 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The spelling of 23461173891 in words is "twenty-three billion, four hundred sixty-one million, one hundred seventy-three thousand, eight hundred ninety-one".