16564040451466 has 16 divisors (see below), whose sum is σ = 25337805364224. Its totient is φ = 8118388676944.

The previous prime is 16564040451457. The next prime is 16564040451467. The reversal of 16564040451466 is 66415404046561.

It is a super-3 number, since 3×16564040451466³ (a number of 41 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (16564040451467) by changing a digit.

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, 70719226 + ... + 70953061.

It is an arithmetic number, because the mean of its divisors is an integer number (1583612835264).

Almost surely, 2^{16564040451466} is an apocalyptic number.

16564040451466 is a deficient number, since it is larger than the sum of its proper divisors (8773764912758).

16564040451466 is a wasteful number, since it uses less digits than its factorization.

16564040451466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141673445.

The product of its (nonzero) digits is 8294400, while the sum is 52.

The spelling of 16564040451466 in words is "sixteen trillion, five hundred sixty-four billion, forty million, four hundred fifty-one thousand, four hundred sixty-six".