671871068514 has 24 divisors (see below), whose sum is σ = 1456848290352. Its totient is φ = 223783539480.

The previous prime is 671871068507. The next prime is 671871068543. The reversal of 671871068514 is 415860178176.

671871068514 is a `hidden beast` number, since 6 + 7 + 18 + 7 + 106 + 8 + 514 = 666.

671871068514 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×671871068514² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14433064 + ... + 14479539.

It is an arithmetic number, because the mean of its divisors is an integer number (60702012098).

Almost surely, 2^671871068514 is an apocalyptic number.

671871068514 is an abundant number, since it is smaller than the sum of its proper divisors (784977221838).

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

671871068514 is a wasteful number, since it uses less digits than its factorization.

671871068514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28913902 (or 28913899 counting only the distinct ones).

The product of its (nonzero) digits is 2257920, while the sum is 54.

The spelling of 671871068514 in words is "six hundred seventy-one billion, eight hundred seventy-one million, sixty-eight thousand, five hundred fourteen".