16556064367773 has 32 divisors (see below), whose sum is σ = 26002341423360. Its totient is φ = 9172158266880.

The previous prime is 16556064367763. The next prime is 16556064367837. The reversal of 16556064367773 is 37776346065561.

It is a happy number.

It is not a de Polignac number, because 16556064367773 - 2¹⁸ = 16556064105629 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16556064367723) 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 31 ways as a sum of consecutive naturals, for example, 37695678 + ... + 38132351.

It is an arithmetic number, because the mean of its divisors is an integer number (812573169480).

Almost surely, 2^{16556064367773} is an apocalyptic number.

It is an amenable number.

16556064367773 is a deficient number, since it is larger than the sum of its proper divisors (9446277055587).

16556064367773 is a wasteful number, since it uses less digits than its factorization.

16556064367773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75828357.

The product of its (nonzero) digits is 400075200, while the sum is 66.

The spelling of 16556064367773 in words is "sixteen trillion, five hundred fifty-six billion, sixty-four million, three hundred sixty-seven thousand, seven hundred seventy-three".