21743253671740 has 48 divisors (see below), whose sum is σ = 45827162664192. Its totient is φ = 8665621618176.

The previous prime is 21743253671707. The next prime is 21743253671747. The reversal of 21743253671740 is 4717635234712.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21743253671747) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 287028309 + ... + 287104051.

It is an arithmetic number, because the mean of its divisors is an integer number (954732555504).

Almost surely, 2^{21743253671740} is an apocalyptic number.

21743253671740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21743253671740 is an abundant number, since it is smaller than the sum of its proper divisors (24083908992452).

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

21743253671740 is a wasteful number, since it uses less digits than its factorization.

21743253671740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127846 (or 127844 counting only the distinct ones).

The product of its (nonzero) digits is 5927040, while the sum is 52.

The spelling of 21743253671740 in words is "twenty-one trillion, seven hundred forty-three billion, two hundred fifty-three million, six hundred seventy-one thousand, seven hundred forty".