16505206466 has 32 divisors (see below), whose sum is σ = 30124628352. Its totient is φ = 6620762880.

The previous prime is 16505206411. The next prime is 16505206477. The reversal of 16505206466 is 66460250561.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 148496 + ... + 234651.

It is an arithmetic number, because the mean of its divisors is an integer number (941394636).

Almost surely, 2^16505206466 is an apocalyptic number.

16505206466 is a deficient number, since it is larger than the sum of its proper divisors (13619421886).

16505206466 is a wasteful number, since it uses less digits than its factorization.

16505206466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383354.

The product of its (nonzero) digits is 259200, while the sum is 41.

The spelling of 16505206466 in words is "sixteen billion, five hundred five million, two hundred six thousand, four hundred sixty-six".