21441641373 has 6 divisors (see below), whose sum is σ = 30971259774. Its totient is φ = 14294427576.

The previous prime is 21441641339. The next prime is 21441641401. The reversal of 21441641373 is 37314614412.

21441641373 is a `hidden beast` number, since 2 + 1 + 4 + 4 + 1 + 641 + 3 + 7 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 16272318969 + 5169322404 = 127563^2 + 71898^2 .

It is not a de Polignac number, because 21441641373 - 2¹³ = 21441633181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21441643373) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1191202290 + ... + 1191202307.

It is an arithmetic number, because the mean of its divisors is an integer number (5161876629).

Almost surely, 2^21441641373 is an apocalyptic number.

It is an amenable number.

21441641373 is a deficient number, since it is larger than the sum of its proper divisors (9529618401).

21441641373 is a wasteful number, since it uses less digits than its factorization.

21441641373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2382404603 (or 2382404600 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The spelling of 21441641373 in words is "twenty-one billion, four hundred forty-one million, six hundred forty-one thousand, three hundred seventy-three".