6557280780 has 48 divisors (see below), whose sum is σ = 18364679424. Its totient is φ = 1748199360.

The previous prime is 6557280773. The next prime is 6557280803. The reversal of 6557280780 is 870827556.

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 15 ways as a sum of consecutive naturals, for example, 315799 + ... + 335921.

It is an arithmetic number, because the mean of its divisors is an integer number (382597488).

Almost surely, 2^6557280780 is an apocalyptic number.

6557280780 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6557280780 is an abundant number, since it is smaller than the sum of its proper divisors (11807398644).

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

6557280780 is a wasteful number, since it uses less digits than its factorization.

6557280780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25566 (or 25564 counting only the distinct ones).

The product of its (nonzero) digits is 940800, while the sum is 48.

The square root of 6557280780 is about 80977.0385973703. The cubic root of 6557280780 is about 1871.7216340876.

The spelling of 6557280780 in words is "six billion, five hundred fifty-seven million, two hundred eighty thousand, seven hundred eighty".