21714166422655 has 32 divisors (see below), whose sum is σ = 32048063614080. Its totient is φ = 13784113336320.

The previous prime is 21714166422589. The next prime is 21714166422709. The reversal of 21714166422655 is 55622466141712.

It is not a de Polignac number, because 21714166422655 - 2¹⁷ = 21714166291583 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 299098110 + ... + 299170699.

It is an arithmetic number, because the mean of its divisors is an integer number (1001501987940).

Almost surely, 2^{21714166422655} is an apocalyptic number.

21714166422655 is a deficient number, since it is larger than the sum of its proper divisors (10333897191425).

21714166422655 is a wasteful number, since it uses less digits than its factorization.

21714166422655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 598268899.

The product of its digits is 4838400, while the sum is 52.

The spelling of 21714166422655 in words is "twenty-one trillion, seven hundred fourteen billion, one hundred sixty-six million, four hundred twenty-two thousand, six hundred fifty-five".