6532779456 has 84 divisors (see below), whose sum is σ = 21400050672. Its totient is φ = 1866507264.

The previous prime is 6532779437. The next prime is 6532779479. The reversal of 6532779456 is 6549772356.

It is a tau number, because it is divible by the number of its divisors (84).

It is a congruent 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 11 ways as a sum of consecutive naturals, for example, 806085 + ... + 814148.

It is an arithmetic number, because the mean of its divisors is an integer number (254762508).

Almost surely, 2^6532779456 is an apocalyptic number.

It is an amenable number.

6532779456 is an abundant number, since it is smaller than the sum of its proper divisors (14867271216).

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

6532779456 is a wasteful number, since it uses less digits than its factorization.

6532779456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1620258 (or 1620245 counting only the distinct ones).

The product of its digits is 9525600, while the sum is 54.

The square root of 6532779456 is about 80825.6113864906. The cubic root of 6532779456 is about 1869.3874909721.

The spelling of 6532779456 in words is "six billion, five hundred thirty-two million, seven hundred seventy-nine thousand, four hundred fifty-six".