16612651043044 has 81 divisors (see below), whose sum is σ = 33956824806723. Its totient is φ = 7090728211056.

The previous prime is 16612651043003. The next prime is 16612651043083. The reversal of 16612651043044 is 44034015621661.

The square root of 16612651043044 is 4075862.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×16612651043044² (a number of 27 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

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 26 ways as a sum of consecutive naturals, for example, 19800537177 + ... + 19800538015.

Almost surely, 2^{16612651043044} is an apocalyptic number.

16612651043044 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

16612651043044 is the 4075862-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16612651043044

16612651043044 is an abundant number, since it is smaller than the sum of its proper divisors (17344173763679).

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

16612651043044 is an frugal number, since it uses more digits than its factorization.

16612651043044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2390 (or 1195 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 43.

The spelling of 16612651043044 in words is "sixteen trillion, six hundred twelve billion, six hundred fifty-one million, forty-three thousand, forty-four".