16722807661064 has 64 divisors (see below), whose sum is σ = 31722576350400. Its totient is φ = 8263890561024.

The previous prime is 16722807660991. The next prime is 16722807661069. The reversal of 16722807661064 is 46016670822761.

It is a super-2 number, since 2×16722807661064² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16722807661069) 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, 1133972939 + ... + 1133987685.

It is an arithmetic number, because the mean of its divisors is an integer number (495665255475).

Almost surely, 2^{16722807661064} is an apocalyptic number.

It is an amenable number.

16722807661064 is a deficient number, since it is larger than the sum of its proper divisors (14999768689336).

16722807661064 is a wasteful number, since it uses less digits than its factorization.

16722807661064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18342 (or 18338 counting only the distinct ones).

The product of its (nonzero) digits is 8128512, while the sum is 56.

The spelling of 16722807661064 in words is "sixteen trillion, seven hundred twenty-two billion, eight hundred seven million, six hundred sixty-one thousand, sixty-four".