6779534121 has 12 divisors (see below), whose sum is σ = 9858384900. Its totient is φ = 4489355040.

The previous prime is 6779534107. The next prime is 6779534123. The reversal of 6779534121 is 1214359776.

It can be written as a sum of positive squares in 2 ways, for example, as 1941636096 + 4837898025 = 44064^2 + 69555^2 .

It is not a de Polignac number, because 6779534121 - 2⁵ = 6779534089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6779534123) 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 11 ways as a sum of consecutive naturals, for example, 2526450 + ... + 2529131.

It is an arithmetic number, because the mean of its divisors is an integer number (821532075).

Almost surely, 2^6779534121 is an apocalyptic number.

It is an amenable number.

6779534121 is a deficient number, since it is larger than the sum of its proper divisors (3078850779).

6779534121 is a wasteful number, since it uses less digits than its factorization.

6779534121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5055736 (or 5055733 counting only the distinct ones).

The product of its digits is 317520, while the sum is 45.

The square root of 6779534121 is about 82337.9263826822. The cubic root of 6779534121 is about 1892.6339097648.

The spelling of 6779534121 in words is "six billion, seven hundred seventy-nine million, five hundred thirty-four thousand, one hundred twenty-one".