6577774948866 has 32 divisors (see below), whose sum is σ = 14354576870400. Its totient is φ = 1992839040080.

The previous prime is 6577774948859. The next prime is 6577774948903. The reversal of 6577774948866 is 6688494777756.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10341246 + ... + 10958873.

It is an arithmetic number, because the mean of its divisors is an integer number (448580527200).

Almost surely, 2^{6577774948866} is an apocalyptic number.

6577774948866 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

6577774948866 is an abundant number, since it is smaller than the sum of its proper divisors (7776801921534).

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

6577774948866 is a wasteful number, since it uses less digits than its factorization.

6577774948866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21304814.

The product of its digits is 23897825280, while the sum is 84.

The spelling of 6577774948866 in words is "six trillion, five hundred seventy-seven billion, seven hundred seventy-four million, nine hundred forty-eight thousand, eight hundred sixty-six".