13820821466 has 16 divisors (see below), whose sum is σ = 21965598144. Its totient is φ = 6499506624.

The previous prime is 13820821387. The next prime is 13820821471. The reversal of 13820821466 is 66412802831.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86630 + ... + 187473.

It is an arithmetic number, because the mean of its divisors is an integer number (1372849884).

Almost surely, 2^13820821466 is an apocalyptic number.

13820821466 is a deficient number, since it is larger than the sum of its proper divisors (8144776678).

13820821466 is a wasteful number, since it uses less digits than its factorization.

13820821466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275605.

The product of its (nonzero) digits is 110592, while the sum is 41.

The spelling of 13820821466 in words is "thirteen billion, eight hundred twenty million, eight hundred twenty-one thousand, four hundred sixty-six".