6809720426133 has 16 divisors (see below), whose sum is σ = 9374833728000. Its totient is φ = 4392282723840.

The previous prime is 6809720426099. The next prime is 6809720426137. The reversal of 6809720426133 is 3316240279086.

It is a de Polignac number, because none of the positive numbers 2^k-6809720426133 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 8665528 + ... + 9418641.

It is an arithmetic number, because the mean of its divisors is an integer number (585927108000).

Almost surely, 2^{6809720426133} is an apocalyptic number.

It is an amenable number.

6809720426133 is a deficient number, since it is larger than the sum of its proper divisors (2565113301867).

6809720426133 is a wasteful number, since it uses less digits than its factorization.

6809720426133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18088252.

The product of its (nonzero) digits is 2612736, while the sum is 51.

The spelling of 6809720426133 in words is "six trillion, eight hundred nine billion, seven hundred twenty million, four hundred twenty-six thousand, one hundred thirty-three".