6779818461 has 24 divisors (see below), whose sum is σ = 9815130336. Its totient is φ = 4160894400.

The previous prime is 6779818457. The next prime is 6779818489. The reversal of 6779818461 is 1648189776.

It is a happy number.

It is not a de Polignac number, because 6779818461 - 2² = 6779818457 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6779818961) 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, 171186 + ... + 207036.

It is an arithmetic number, because the mean of its divisors is an integer number (408963764).

Almost surely, 2^6779818461 is an apocalyptic number.

It is an amenable number.

6779818461 is a deficient number, since it is larger than the sum of its proper divisors (3035311875).

6779818461 is a wasteful number, since it uses less digits than its factorization.

6779818461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36253 (or 36240 counting only the distinct ones).

The product of its digits is 4064256, while the sum is 57.

The square root of 6779818461 is about 82339.6530293880. The cubic root of 6779818461 is about 1892.6603690068.

The spelling of 6779818461 in words is "six billion, seven hundred seventy-nine million, eight hundred eighteen thousand, four hundred sixty-one".