5146521664 has 28 divisors (see below), whose sum is σ = 10229698108. Its totient is φ = 2568960000.

The previous prime is 5146521647. The next prime is 5146521671. The reversal of 5146521664 is 4661256415.

It can be written as a sum of positive squares in 2 ways, for example, as 4777574400 + 368947264 = 69120^2 + 19208^2 .

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 3 ways as a sum of consecutive naturals, for example, 28437 + ... + 105364.

It is an arithmetic number, because the mean of its divisors is an integer number (365346361).

Almost surely, 2^5146521664 is an apocalyptic number.

It is an amenable number.

5146521664 is a deficient number, since it is larger than the sum of its proper divisors (5083176444).

5146521664 is a wasteful number, since it uses less digits than its factorization.

5146521664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134414 (or 134404 counting only the distinct ones).

The product of its digits is 172800, while the sum is 40.

The square root of 5146521664 is about 71739.2616633319. The cubic root of 5146521664 is about 1726.5186278238.

The spelling of 5146521664 in words is "five billion, one hundred forty-six million, five hundred twenty-one thousand, six hundred sixty-four".