16442621525536 has 24 divisors (see below), whose sum is σ = 32385430940940. Its totient is φ = 8217750175488.

The previous prime is 16442621525509. The next prime is 16442621525593. The reversal of 16442621525536 is 63552512624461.

It can be written as a sum of positive squares in 2 ways, for example, as 15782790235536 + 659831290000 = 3972756^2 + 812300^2 .

It is a super-3 number, since 3×16442621525536³ (a number of 41 digits) contains 333 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 111193311 + ... + 111341086.

Almost surely, 2^{16442621525536} is an apocalyptic number.

16442621525536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16442621525536 is a deficient number, since it is larger than the sum of its proper divisors (15942809415404).

16442621525536 is a wasteful number, since it uses less digits than its factorization.

16442621525536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222536716 (or 222536708 counting only the distinct ones).

The product of its digits is 10368000, while the sum is 52.

The spelling of 16442621525536 in words is "sixteen trillion, four hundred forty-two billion, six hundred twenty-one million, five hundred twenty-five thousand, five hundred thirty-six".