16247122915984 has 15 divisors (see below), whose sum is σ = 31478831888233. Its totient is φ = 8123553396448.

The previous prime is 16247122915981. The next prime is 16247122916033. The reversal of 16247122915984 is 48951922174261.

It is a happy number.

The square root of 16247122915984 is 4030772.

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

It can be written as a sum of positive squares in only one way, i.e., 7672346010000 + 8574776905984 = 2769900^2 + 2928272^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16247122915981) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 15619242 + ... + 16626934.

Almost surely, 2^{16247122915984} is an apocalyptic number.

16247122915984 is the 4030772-nd square number.

It is an amenable number.

16247122915984 is a deficient number, since it is larger than the sum of its proper divisors (15231708972249).

16247122915984 is an frugal number, since it uses more digits than its factorization.

16247122915984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2015394 (or 1007695 counting only the distinct ones).

The product of its digits is 17418240, while the sum is 61.

The spelling of 16247122915984 in words is "sixteen trillion, two hundred forty-seven billion, one hundred twenty-two million, nine hundred fifteen thousand, nine hundred eighty-four".