6557777580 has 24 divisors (see below), whose sum is σ = 18361777392. Its totient is φ = 1748740672.

The previous prime is 6557777579. The next prime is 6557777581. The reversal of 6557777580 is 857777556.

It is an interprime number because it is at equal distance from previous prime (6557777579) and next prime (6557777581).

It is a self number, because there is not a number n which added to its sum of digits gives 6557777580.

It is not an unprimeable number, because it can be changed into a prime (6557777581) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54648087 + ... + 54648206.

It is an arithmetic number, because the mean of its divisors is an integer number (765074058).

Almost surely, 2^6557777580 is an apocalyptic number.

6557777580 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6557777580 is an abundant number, since it is smaller than the sum of its proper divisors (11803999812).

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

6557777580 is a wasteful number, since it uses less digits than its factorization.

6557777580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109296305 (or 109296303 counting only the distinct ones).

The product of its (nonzero) digits is 14406000, while the sum is 57.

The square root of 6557777580 is about 80980.1060755047. The cubic root of 6557777580 is about 1871.7689020460.

The spelling of 6557777580 in words is "six billion, five hundred fifty-seven million, seven hundred seventy-seven thousand, five hundred eighty".