21706832342 has 8 divisors (see below), whose sum is σ = 35064883056. Its totient is φ = 10018537992.

The previous prime is 21706832339. The next prime is 21706832351. The reversal of 21706832342 is 24323860712.

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

It is a junction number, because it is equal to n+sod(n) for n = 21706832296 and 21706832305.

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, 417439058 + ... + 417439109.

It is an arithmetic number, because the mean of its divisors is an integer number (4383110382).

Almost surely, 2^21706832342 is an apocalyptic number.

21706832342 is a deficient number, since it is larger than the sum of its proper divisors (13358050714).

21706832342 is a wasteful number, since it uses less digits than its factorization.

21706832342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 834878182.

The product of its (nonzero) digits is 96768, while the sum is 38.

The spelling of 21706832342 in words is "twenty-one billion, seven hundred six million, eight hundred thirty-two thousand, three hundred forty-two".