21703616043 has 32 divisors (see below), whose sum is σ = 30025820160. Its totient is φ = 13938462720.

The previous prime is 21703616027. The next prime is 21703616071. The reversal of 21703616043 is 34061630712.

It is not a de Polignac number, because 21703616043 - 2⁴ = 21703616027 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21703615995 and 21703616013.

It is not an unprimeable number, because it can be changed into a prime (21703616023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1625571 + ... + 1638867.

It is an arithmetic number, because the mean of its divisors is an integer number (938306880).

Almost surely, 2^21703616043 is an apocalyptic number.

21703616043 is a deficient number, since it is larger than the sum of its proper divisors (8322204117).

21703616043 is a wasteful number, since it uses less digits than its factorization.

21703616043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13547.

The product of its (nonzero) digits is 18144, while the sum is 33.

The spelling of 21703616043 in words is "twenty-one billion, seven hundred three million, six hundred sixteen thousand, forty-three".