16764633773 has 4 divisors (see below), whose sum is σ = 16930620348. Its totient is φ = 16598647200.

The previous prime is 16764633757. The next prime is 16764633779. The reversal of 16764633773 is 37733646761.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11388518089 + 5376115684 = 106717^2 + 73322^2 .

It is a cyclic number.

It is not a de Polignac number, because 16764633773 - 2⁴ = 16764633757 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16764633779) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82993136 + ... + 82993337.

It is an arithmetic number, because the mean of its divisors is an integer number (4232655087).

Almost surely, 2^16764633773 is an apocalyptic number.

It is an amenable number.

16764633773 is a deficient number, since it is larger than the sum of its proper divisors (165986575).

16764633773 is a wasteful number, since it uses less digits than its factorization.

16764633773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165986574.

The product of its digits is 8001504, while the sum is 53.

The spelling of 16764633773 in words is "sixteen billion, seven hundred sixty-four million, six hundred thirty-three thousand, seven hundred seventy-three".