6809720426132 has 24 divisors (see below), whose sum is σ = 12900199774056. Its totient is φ = 3126663180288.

The previous prime is 6809720426099. The next prime is 6809720426137. The reversal of 6809720426132 is 2316240279086.

It can be written as a sum of positive squares in 4 ways, for example, as 382957994896 + 6426762431236 = 618836^2 + 2535106^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6809720426137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 339254633 + ... + 339274704.

It is an arithmetic number, because the mean of its divisors is an integer number (537508323919).

Almost surely, 2^{6809720426132} is an apocalyptic number.

It is an amenable number.

6809720426132 is a deficient number, since it is larger than the sum of its proper divisors (6090479347924).

6809720426132 is a wasteful number, since it uses less digits than its factorization.

6809720426132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678529547 (or 678529545 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 50.

The spelling of 6809720426132 in words is "six trillion, eight hundred nine billion, seven hundred twenty million, four hundred twenty-six thousand, one hundred thirty-two".