6851872345734 has 112 divisors (see below), whose sum is σ = 16596809334000. Its totient is φ = 2108041391808.

The previous prime is 6851872345727. The next prime is 6851872345763. The reversal of 6851872345734 is 4375432781586.

It is a happy number.

6851872345734 is a `hidden beast` number, since 6 + 8 + 51 + 8 + 7 + 2 + 3 + 4 + 573 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 289965432 + ... + 289989060.

It is an arithmetic number, because the mean of its divisors is an integer number (148185797625).

Almost surely, 2^{6851872345734} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6851872345734, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8298404667000).

6851872345734 is an abundant number, since it is smaller than the sum of its proper divisors (9744936988266).

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

6851872345734 is a wasteful number, since it uses less digits than its factorization.

6851872345734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38961 (or 38946 counting only the distinct ones).

The product of its digits is 135475200, while the sum is 63.

The spelling of 6851872345734 in words is "six trillion, eight hundred fifty-one billion, eight hundred seventy-two million, three hundred forty-five thousand, seven hundred thirty-four".