6577765980 has 24 divisors (see below), whose sum is σ = 18417744912. Its totient is φ = 1754070912.

The previous prime is 6577765979. The next prime is 6577766011. The reversal of 6577765980 is 895677756.

It is a Harshad number since it is a multiple of its sum of digits (60), and also a Moran number because the ratio is a prime number: 109629433 = 6577765980 / (6 + 5 + 7 + 7 + 7 + 6 + 5 + 9 + 8 + 0).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54814657 + ... + 54814776.

It is an arithmetic number, because the mean of its divisors is an integer number (767406038).

Almost surely, 2^6577765980 is an apocalyptic number.

6577765980 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6577765980 is an abundant number, since it is smaller than the sum of its proper divisors (11839978932).

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

6577765980 is a wasteful number, since it uses less digits than its factorization.

6577765980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109629445 (or 109629443 counting only the distinct ones).

The product of its (nonzero) digits is 22226400, while the sum is 60.

The square root of 6577765980 is about 81103.4276710917. The cubic root of 6577765980 is about 1873.6687182801.

The spelling of 6577765980 in words is "six billion, five hundred seventy-seven million, seven hundred sixty-five thousand, nine hundred eighty".