21704796073 has 8 divisors (see below), whose sum is σ = 21820104000. Its totient is φ = 21589550928.

The previous prime is 21704796059. The next prime is 21704796079. The reversal of 21704796073 is 37069740712.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21704796073 - 2²¹ = 21702698921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21704796079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 784998 + ... + 812176.

It is an arithmetic number, because the mean of its divisors is an integer number (2727513000).

Almost surely, 2^21704796073 is an apocalyptic number.

It is an amenable number.

21704796073 is a deficient number, since it is larger than the sum of its proper divisors (115307927).

21704796073 is a wasteful number, since it uses less digits than its factorization.

21704796073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31391.

The product of its (nonzero) digits is 444528, while the sum is 46.

The spelling of 21704796073 in words is "twenty-one billion, seven hundred four million, seven hundred ninety-six thousand, seventy-three".