21743247574452 has 24 divisors (see below), whose sum is σ = 51971664935232. Its totient is φ = 7070974820800.

The previous prime is 21743247574441. The next prime is 21743247574459. The reversal of 21743247574452 is 25447574234712.

It is a hoax number, since the sum of its digits (57) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 21743247574392 and 21743247574401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21743247574459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22096795824 + ... + 22096796807.

It is an arithmetic number, because the mean of its divisors is an integer number (2165486038968).

Almost surely, 2^{21743247574452} is an apocalyptic number.

It is an amenable number.

21743247574452 is an abundant number, since it is smaller than the sum of its proper divisors (30228417360780).

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

21743247574452 is a wasteful number, since it uses less digits than its factorization.

21743247574452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44193592679 (or 44193592677 counting only the distinct ones).

The product of its digits is 52684800, while the sum is 57.

The spelling of 21743247574452 in words is "twenty-one trillion, seven hundred forty-three billion, two hundred forty-seven million, five hundred seventy-four thousand, four hundred fifty-two".