6809077044 has 648 divisors, whose sum is σ = 24504217920. Its totient is φ = 1580705280.

The previous prime is 6809077043. The next prime is 6809077081. The reversal of 6809077044 is 4407709086.

It is a super-2 number, since 2×6809077044² = 92727060382255555872, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6809077043) by changing a digit.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 93274992 + ... + 93275064.

Almost surely, 2^6809077044 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6809077044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12252108960).

6809077044 is an abundant number, since it is smaller than the sum of its proper divisors (17695140876).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6809077044 is a wasteful number, since it uses less digits than its factorization.

6809077044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161 (or 138 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The square root of 6809077044 is about 82517.1318212164. The cubic root of 6809077044 is about 1895.3790795111.

The spelling of 6809077044 in words is "six billion, eight hundred nine million, seventy-seven thousand, forty-four".