6809019509428 has 12 divisors (see below), whose sum is σ = 11915926344000. Its totient is φ = 3404469125432.

The previous prime is 6809019509399. The next prime is 6809019509459. The reversal of 6809019509428 is 8249059109086.

It is a super-2 number, since 2×6809019509428² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9778678 + ... + 10451821.

It is an arithmetic number, because the mean of its divisors is an integer number (992993862000).

Almost surely, 2^{6809019509428} is an apocalyptic number.

It is an amenable number.

6809019509428 is a deficient number, since it is larger than the sum of its proper divisors (5106906834572).

6809019509428 is a wasteful number, since it uses less digits than its factorization.

6809019509428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20314646 (or 20314644 counting only the distinct ones).

The product of its (nonzero) digits is 11197440, while the sum is 61.

The spelling of 6809019509428 in words is "six trillion, eight hundred nine billion, nineteen million, five hundred nine thousand, four hundred twenty-eight".