16866438922 has 16 divisors (see below), whose sum is σ = 26886736512. Its totient is φ = 7907855040.

The previous prime is 16866438917. The next prime is 16866438923. The reversal of 16866438922 is 22983466861.

It is not an unprimeable number, because it can be changed into a prime (16866438923) 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 7 ways as a sum of consecutive naturals, for example, 906048 + ... + 924475.

It is an arithmetic number, because the mean of its divisors is an integer number (1680421032).

Almost surely, 2^16866438922 is an apocalyptic number.

16866438922 is a deficient number, since it is larger than the sum of its proper divisors (10020297590).

16866438922 is a wasteful number, since it uses less digits than its factorization.

16866438922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1830813.

The product of its digits is 5971968, while the sum is 55.

The spelling of 16866438922 in words is "sixteen billion, eight hundred sixty-six million, four hundred thirty-eight thousand, nine hundred twenty-two".