6711677766621 has 10 divisors (see below), whose sum is σ = 10026086540382. Its totient is φ = 4474451844360.

The previous prime is 6711677766589. The next prime is 6711677766683. The reversal of 6711677766621 is 1266677761176.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 5898515686596 + 813162080025 = 2428686^2 + 901755^2 .

It is not a de Polignac number, because 6711677766621 - 2⁵ = 6711677766589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6711677765621) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 41430109590 + ... + 41430109751.

Almost surely, 2^{6711677766621} is an apocalyptic number.

It is an amenable number.

6711677766621 is a deficient number, since it is larger than the sum of its proper divisors (3314408773761).

6711677766621 is an equidigital number, since it uses as much as digits as its factorization.

6711677766621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82860219353 (or 82860219344 counting only the distinct ones).

The product of its digits is 37340352, while the sum is 63.

Subtracting from 6711677766621 its reverse (1266677761176), we obtain a palindrome (5445000005445).

The spelling of 6711677766621 in words is "six trillion, seven hundred eleven billion, six hundred seventy-seven million, seven hundred sixty-six thousand, six hundred twenty-one".