23171235840000 has 1400 divisors, whose sum is σ = 87719625851550. Its totient is φ = 6115295232000.

The previous prime is 23171235839959. The next prime is 23171235840007. The reversal of 23171235840000 is 4853217132.

23171235840000 is a `hidden beast` number, since 2 + 3 + 1 + 71 + 2 + 3 + 584 + 0 + 0 + 0 + 0 = 666.

It can be written as a sum of positive squares in 5 ways, for example, as 160717602816 + 23010518237184 = 400896^2 + 4796928^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23171235840007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 69 ways as a sum of consecutive naturals, for example, 238878719952 + ... + 238878720048.

Almost surely, 2^{23171235840000} is an apocalyptic number.

23171235840000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23171235840000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43859812925775).

23171235840000 is an abundant number, since it is smaller than the sum of its proper divisors (64548390011550).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23171235840000 is an frugal number, since it uses more digits than its factorization.

23171235840000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173 (or 107 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The spelling of 23171235840000 in words is "twenty-three trillion, one hundred seventy-one billion, two hundred thirty-five million, eight hundred forty thousand".