21303641373 has 32 divisors (see below), whose sum is σ = 33064012800. Its totient is φ = 11949987456.

The previous prime is 21303641357. The next prime is 21303641383. The reversal of 21303641373 is 37314630312.

It is not a de Polignac number, because 21303641373 - 2⁴ = 21303641357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21303641383) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 218790 + ... + 300792.

It is an arithmetic number, because the mean of its divisors is an integer number (1033250400).

Almost surely, 2^21303641373 is an apocalyptic number.

It is an amenable number.

21303641373 is a deficient number, since it is larger than the sum of its proper divisors (11760371427).

21303641373 is a wasteful number, since it uses less digits than its factorization.

21303641373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82241.

The product of its (nonzero) digits is 27216, while the sum is 33.

The spelling of 21303641373 in words is "twenty-one billion, three hundred three million, six hundred forty-one thousand, three hundred seventy-three".