16564641344141 has 16 divisors (see below), whose sum is σ = 19083557391360. Its totient is φ = 14219728530480.

The previous prime is 16564641344123. The next prime is 16564641344171. The reversal of 16564641344141 is 14144314646561.

It is a happy number.

It is not a de Polignac number, because 16564641344141 - 2⁶ = 16564641344077 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16564641344141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16564641344171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129018341 + ... + 129146666.

It is an arithmetic number, because the mean of its divisors is an integer number (1192722336960).

Almost surely, 2^{16564641344141} is an apocalyptic number.

16564641344141 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16564641344141 is a deficient number, since it is larger than the sum of its proper divisors (2518916047219).

16564641344141 is a wasteful number, since it uses less digits than its factorization.

16564641344141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258165344.

The product of its digits is 3317760, while the sum is 50.

The spelling of 16564641344141 in words is "sixteen trillion, five hundred sixty-four billion, six hundred forty-one million, three hundred forty-four thousand, one hundred forty-one".