12716621824 has 45 divisors (see below), whose sum is σ = 25461367981. Its totient is φ = 6351093760.

The previous prime is 12716621791. The next prime is 12716621849. The reversal of 12716621824 is 42812661721.

The square root of 12716621824 is 112768.

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., 2230861824 + 10485760000 = 47232^2 + 102400^2 .

It is a super-2 number, since 2×12716621824² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 14433864 + ... + 14434744.

Almost surely, 2^12716621824 is an apocalyptic number.

12716621824 is the 112768-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12716621824

12716621824 is an abundant number, since it is smaller than the sum of its proper divisors (12744746157).

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

12716621824 is an frugal number, since it uses more digits than its factorization.

12716621824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1790 (or 883 counting only the distinct ones).

The product of its digits is 64512, while the sum is 40.

The spelling of 12716621824 in words is "twelve billion, seven hundred sixteen million, six hundred twenty-one thousand, eight hundred twenty-four".