16666668522 has 48 divisors (see below), whose sum is σ = 43697489472. Its totient is φ = 4481792640.

The previous prime is 16666668517. The next prime is 16666668523. The reversal of 16666668522 is 22586666661.

It is not an unprimeable number, because it can be changed into a prime (16666668523) 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 23 ways as a sum of consecutive naturals, for example, 3888304 + ... + 3892587.

It is an arithmetic number, because the mean of its divisors is an integer number (910364364).

Almost surely, 2^16666668522 is an apocalyptic number.

16666668522 is an abundant number, since it is smaller than the sum of its proper divisors (27030820950).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16666668522 is a wasteful number, since it uses less digits than its factorization.

16666668522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7780923 (or 7780920 counting only the distinct ones).

The product of its digits is 7464960, while the sum is 54.

The spelling of 16666668522 in words is "sixteen billion, six hundred sixty-six million, six hundred sixty-eight thousand, five hundred twenty-two".