6555765605777 has 4 divisors (see below), whose sum is σ = 6695249980416. Its totient is φ = 6416281231140.

The previous prime is 6555765605717. The next prime is 6555765605801. The reversal of 6555765605777 is 7775065675556.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6555765605777 - 2²² = 6555761411473 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6555765605777.

It is not an unprimeable number, because it can be changed into a prime (6555765605717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69742187249 + ... + 69742187342.

It is an arithmetic number, because the mean of its divisors is an integer number (1673812495104).

Almost surely, 2^{6555765605777} is an apocalyptic number.

It is an amenable number.

6555765605777 is a deficient number, since it is larger than the sum of its proper divisors (139484374639).

6555765605777 is a wasteful number, since it uses less digits than its factorization.

6555765605777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139484374638.

The product of its (nonzero) digits is 1620675000, while the sum is 71.

The spelling of 6555765605777 in words is "six trillion, five hundred fifty-five billion, seven hundred sixty-five million, six hundred five thousand, seven hundred seventy-seven".