5127705664 has 21 divisors (see below), whose sum is σ = 10176427831. Its totient is φ = 2563566400.

The previous prime is 5127705647. The next prime is 5127705677. The reversal of 5127705664 is 4665077215.

The square root of 5127705664 is 71608.

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

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5127705664.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 568389 + ... + 577339.

Almost surely, 2^5127705664 is an apocalyptic number.

5127705664 is the 71608-th square number.

It is an amenable number.

5127705664 is a deficient number, since it is larger than the sum of its proper divisors (5048722167).

5127705664 is an frugal number, since it uses more digits than its factorization.

5127705664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17914 (or 8953 counting only the distinct ones).

The product of its (nonzero) digits is 352800, while the sum is 43.

The cubic root of 5127705664 is about 1724.4119722534.

It can be divided in two parts, 512 and 7705664, that added together give a square (7706176 = 2776²).

The spelling of 5127705664 in words is "five billion, one hundred twenty-seven million, seven hundred five thousand, six hundred sixty-four".