6851117394144 has 120 divisors (see below), whose sum is σ = 20479257009288. Its totient is φ = 2246267946240.

The previous prime is 6851117394119. The next prime is 6851117394203. The reversal of 6851117394144 is 4414937111586.

6851117394144 is a `hidden beast` number, since 6 + 8 + 51 + 1 + 173 + 9 + 414 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 21507282 + ... + 21823505.

Almost surely, 2^{6851117394144} is an apocalyptic number.

It is an amenable number.

6851117394144 is an abundant number, since it is smaller than the sum of its proper divisors (13628139615144).

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

6851117394144 is a wasteful number, since it uses less digits than its factorization.

6851117394144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43330870 (or 43330853 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 54.

The spelling of 6851117394144 in words is "six trillion, eight hundred fifty-one billion, one hundred seventeen million, three hundred ninety-four thousand, one hundred forty-four".