6521945792 has 28 divisors (see below), whose sum is σ = 13024439280. Its totient is φ = 3240197376.

The previous prime is 6521945767. The next prime is 6521945813. The reversal of 6521945792 is 2975491256.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 6521945792.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 314492 + ... + 334587.

Almost surely, 2^6521945792 is an apocalyptic number.

It is an amenable number.

6521945792 is a deficient number, since it is larger than the sum of its proper divisors (6502493488).

6521945792 is a wasteful number, since it uses less digits than its factorization.

6521945792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649248 (or 649238 counting only the distinct ones).

The product of its digits is 1360800, while the sum is 50.

The square root of 6521945792 is about 80758.5648213241. The cubic root of 6521945792 is about 1868.3535501818.

The spelling of 6521945792 in words is "six billion, five hundred twenty-one million, nine hundred forty-five thousand, seven hundred ninety-two".