6480421057 has 8 divisors (see below), whose sum is σ = 7079391360. Its totient is φ = 5883090960.

The previous prime is 6480421049. The next prime is 6480421061. The reversal of 6480421057 is 7501240846.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6480421057 - 2³ = 6480421049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6480421037) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 401778 + ... + 417595.

It is an arithmetic number, because the mean of its divisors is an integer number (884923920).

Almost surely, 2^6480421057 is an apocalyptic number.

It is an amenable number.

6480421057 is a deficient number, since it is larger than the sum of its proper divisors (598970303).

6480421057 is a wasteful number, since it uses less digits than its factorization.

6480421057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820103.

The product of its (nonzero) digits is 53760, while the sum is 37.

The square root of 6480421057 is about 80501.0624588272. The cubic root of 6480421057 is about 1864.3798830063.

The spelling of 6480421057 in words is "six billion, four hundred eighty million, four hundred twenty-one thousand, fifty-seven".