16408666522 has 8 divisors (see below), whose sum is σ = 24614579700. Its totient is φ = 8203806624.

The previous prime is 16408666507. The next prime is 16408666529. The reversal of 16408666522 is 22566680461.

It can be written as a sum of positive squares in 2 ways, for example, as 13942650241 + 2466016281 = 118079^2 + 49659^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (16408666529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 223147 + ... + 287422.

Almost surely, 2^16408666522 is an apocalyptic number.

16408666522 is a deficient number, since it is larger than the sum of its proper divisors (8205913178).

16408666522 is a wasteful number, since it uses less digits than its factorization.

16408666522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526640.

The product of its (nonzero) digits is 829440, while the sum is 46.

The spelling of 16408666522 in words is "sixteen billion, four hundred eight million, six hundred sixty-six thousand, five hundred twenty-two".