6881312731671 has 48 divisors (see below), whose sum is σ = 12030435525888. Its totient is φ = 3700075680000.

The previous prime is 6881312731663. The next prime is 6881312731673. The reversal of 6881312731671 is 1761372131886.

6881312731671 is a `hidden beast` number, since 6 + 8 + 8 + 1 + 312 + 7 + 316 + 7 + 1 = 666.

It is not a de Polignac number, because 6881312731671 - 2³ = 6881312731663 is a prime.

It is a super-2 number, since 2×6881312731671² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6881312731673) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4290496 + ... + 5671946.

It is an arithmetic number, because the mean of its divisors is an integer number (250634073456).

Almost surely, 2^{6881312731671} is an apocalyptic number.

6881312731671 is a deficient number, since it is larger than the sum of its proper divisors (5149122794217).

6881312731671 is a wasteful number, since it uses less digits than its factorization.

6881312731671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1386132 (or 1386129 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 54.

The spelling of 6881312731671 in words is "six trillion, eight hundred eighty-one billion, three hundred twelve million, seven hundred thirty-one thousand, six hundred seventy-one".