20662105227 has 16 divisors (see below), whose sum is σ = 27734821632. Its totient is φ = 13682184800.

The previous prime is 20662105193. The next prime is 20662105231. The reversal of 20662105227 is 72250126602.

It is a cyclic number.

It is not a de Polignac number, because 20662105227 - 2¹⁹ = 20661580939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20662105627) 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 15 ways as a sum of consecutive naturals, for example, 700477 + ... + 729377.

It is an arithmetic number, because the mean of its divisors is an integer number (1733426352).

Almost surely, 2^20662105227 is an apocalyptic number.

20662105227 is a deficient number, since it is larger than the sum of its proper divisors (7072716405).

20662105227 is a wasteful number, since it uses less digits than its factorization.

20662105227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30498.

The product of its (nonzero) digits is 20160, while the sum is 33.

The spelling of 20662105227 in words is "twenty billion, six hundred sixty-two million, one hundred five thousand, two hundred twenty-seven".