16563772033040 has 20 divisors (see below), whose sum is σ = 38510769977004. Its totient is φ = 6625508813184.

The previous prime is 16563772033021. The next prime is 16563772033043. The reversal of 16563772033040 is 4033027736561.

It can be written as a sum of positive squares in 2 ways, for example, as 3031262066704 + 13532509966336 = 1741052^2 + 3678656^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (16563772033043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103523575127 + ... + 103523575286.

Almost surely, 2^{16563772033040} is an apocalyptic number.

16563772033040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16563772033040 is an abundant number, since it is smaller than the sum of its proper divisors (21946997943964).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16563772033040 is a wasteful number, since it uses less digits than its factorization.

16563772033040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207047150426 (or 207047150420 counting only the distinct ones).

The product of its (nonzero) digits is 1905120, while the sum is 47.

The spelling of 16563772033040 in words is "sixteen trillion, five hundred sixty-three billion, seven hundred seventy-two million, thirty-three thousand, forty".