6813897333752 has 16 divisors (see below), whose sum is σ = 13047888512160. Its totient is φ = 3334460397184.

The previous prime is 6813897333709. The next prime is 6813897333781. The reversal of 6813897333752 is 2573337983186.

It is a happy number.

It is a super-2 number, since 2×6813897333752² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9061033313 + ... + 9061034064.

It is an arithmetic number, because the mean of its divisors is an integer number (815493032010).

Almost surely, 2^{6813897333752} is an apocalyptic number.

It is an amenable number.

6813897333752 is a deficient number, since it is larger than the sum of its proper divisors (6233991178408).

6813897333752 is a wasteful number, since it uses less digits than its factorization.

6813897333752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18122067430 (or 18122067426 counting only the distinct ones).

The product of its digits is 137168640, while the sum is 65.

The spelling of 6813897333752 in words is "six trillion, eight hundred thirteen billion, eight hundred ninety-seven million, three hundred thirty-three thousand, seven hundred fifty-two".