21704215094 has 8 divisors (see below), whose sum is σ = 32726775168. Its totient is φ = 10795290040.

The previous prime is 21704215073. The next prime is 21704215111. The reversal of 21704215094 is 49051240712.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28408277 + ... + 28409040.

It is an arithmetic number, because the mean of its divisors is an integer number (4090846896).

Almost surely, 2^21704215094 is an apocalyptic number.

21704215094 is a deficient number, since it is larger than the sum of its proper divisors (11022560074).

21704215094 is a wasteful number, since it uses less digits than its factorization.

21704215094 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56817510.

The product of its (nonzero) digits is 20160, while the sum is 35.

The spelling of 21704215094 in words is "twenty-one billion, seven hundred four million, two hundred fifteen thousand, ninety-four".