6777889511789 has 4 divisors (see below), whose sum is σ = 7394061285600. Its totient is φ = 6161717737980.

The previous prime is 6777889511749. The next prime is 6777889511801. The reversal of 6777889511789 is 9871159887776.

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 a de Polignac number, because none of the positive numbers 2^k-6777889511789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6777889511749) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 308085886889 + ... + 308085886910.

It is an arithmetic number, because the mean of its divisors is an integer number (1848515321400).

Almost surely, 2^{6777889511789} is an apocalyptic number.

It is an amenable number.

6777889511789 is a deficient number, since it is larger than the sum of its proper divisors (616171773811).

6777889511789 is a wasteful number, since it uses less digits than its factorization.

6777889511789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616171773810.

The product of its digits is 2987228160, while the sum is 83.

The spelling of 6777889511789 in words is "six trillion, seven hundred seventy-seven billion, eight hundred eighty-nine million, five hundred eleven thousand, seven hundred eighty-nine".