16442621503722 has 24 divisors (see below), whose sum is σ = 35738063785476. Its totient is φ = 5463584009856.

The previous prime is 16442621503673. The next prime is 16442621503729. The reversal of 16442621503722 is 22730512624461.

16442621503722 is a `hidden beast` number, since 1 + 6 + 4 + 4 + 262 + 15 + 0 + 372 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 16211405742921 + 231215760801 = 4026339^2 + 480849^2 .

It is a super-3 number, since 3×16442621503722³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (16442621503729) 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 11 ways as a sum of consecutive naturals, for example, 1440812863 + ... + 1440824274.

Almost surely, 2^{16442621503722} is an apocalyptic number.

16442621503722 is an abundant number, since it is smaller than the sum of its proper divisors (19295442281754).

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

16442621503722 is a wasteful number, since it uses less digits than its factorization.

16442621503722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2881637462 (or 2881637459 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 45.

The spelling of 16442621503722 in words is "sixteen trillion, four hundred forty-two billion, six hundred twenty-one million, five hundred three thousand, seven hundred twenty-two".