6771121839 has 24 divisors (see below), whose sum is σ = 9887465952. Its totient is φ = 4464956160.

The previous prime is 6771121793. The next prime is 6771121859. The reversal of 6771121839 is 9381211776.

It is not a de Polignac number, because 6771121839 - 2¹¹ = 6771119791 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6771121794 and 6771121803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6771121859) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 336702 + ... + 356244.

It is an arithmetic number, because the mean of its divisors is an integer number (411977748).

Almost surely, 2^6771121839 is an apocalyptic number.

6771121839 is a deficient number, since it is larger than the sum of its proper divisors (3116344113).

6771121839 is a wasteful number, since it uses less digits than its factorization.

6771121839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19967 (or 19964 counting only the distinct ones).

The product of its digits is 127008, while the sum is 45.

The square root of 6771121839 is about 82286.8266431511. The cubic root of 6771121839 is about 1891.8507704077.

The spelling of 6771121839 in words is "six billion, seven hundred seventy-one million, one hundred twenty-one thousand, eight hundred thirty-nine".