6777666211091 has 8 divisors (see below), whose sum is σ = 6827811480000. Its totient is φ = 6727540729320.

The previous prime is 6777666211061. The next prime is 6777666211109. The reversal of 6777666211091 is 1901126667776.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6777666211091 - 2¹⁴ = 6777666194707 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 6777666211091.

It is not an unprimeable number, because it can be changed into a prime (6777666211031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4258841 + ... + 5629658.

It is an arithmetic number, because the mean of its divisors is an integer number (853476435000).

Almost surely, 2^{6777666211091} is an apocalyptic number.

6777666211091 is a deficient number, since it is larger than the sum of its proper divisors (50145268909).

6777666211091 is a wasteful number, since it uses less digits than its factorization.

6777666211091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9893569.

The product of its (nonzero) digits is 8001504, while the sum is 59.

The spelling of 6777666211091 in words is "six trillion, seven hundred seventy-seven billion, six hundred sixty-six million, two hundred eleven thousand, ninety-one".