21704546226 has 16 divisors (see below), whose sum is σ = 47355373728. Its totient is φ = 6577135200.

The previous prime is 21704546219. The next prime is 21704546233. The reversal of 21704546226 is 62264540712.

It is an interprime number because it is at equal distance from previous prime (21704546219) and next prime (21704546233).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 164428315 + ... + 164428446.

It is an arithmetic number, because the mean of its divisors is an integer number (2959710858).

Almost surely, 2^21704546226 is an apocalyptic number.

21704546226 is an abundant number, since it is smaller than the sum of its proper divisors (25650827502).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21704546226 is a wasteful number, since it uses less digits than its factorization.

21704546226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328856777.

The product of its (nonzero) digits is 161280, while the sum is 39.

The spelling of 21704546226 in words is "twenty-one billion, seven hundred four million, five hundred forty-six thousand, two hundred twenty-six".