16564645233104 has 10 divisors (see below), whose sum is σ = 32094000139170. Its totient is φ = 8282322616544.

The previous prime is 16564645233067. The next prime is 16564645233151. The reversal of 16564645233104 is 40133254646561.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 10549633920400 + 6015011312704 = 3248020^2 + 2452552^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 517645163519 + ... + 517645163550.

It is an arithmetic number, because the mean of its divisors is an integer number (3209400013917).

Almost surely, 2^{16564645233104} is an apocalyptic number.

It is an amenable number.

16564645233104 is a deficient number, since it is larger than the sum of its proper divisors (15529354906066).

16564645233104 is a wasteful number, since it uses less digits than its factorization.

16564645233104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1035290327077 (or 1035290327071 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 50.

Adding to 16564645233104 its reverse (40133254646561), we get a palindrome (56697899879665).

The spelling of 16564645233104 in words is "sixteen trillion, five hundred sixty-four billion, six hundred forty-five million, two hundred thirty-three thousand, one hundred four".