871380816376816 has 40 divisors (see below), whose sum is σ = 1707426689058944. Its totient is φ = 430763638947840.

The previous prime is 871380816376747. The next prime is 871380816376843. The reversal of 871380816376816 is 618673618083178.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 281739825 + ... + 284815888.

Almost surely, 2^{871380816376816} is an apocalyptic number.

It is an amenable number.

871380816376816 is a deficient number, since it is larger than the sum of its proper divisors (836045872682128).

871380816376816 is a wasteful number, since it uses less digits than its factorization.

871380816376816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566556809 (or 566556803 counting only the distinct ones).

The product of its (nonzero) digits is 390168576, while the sum is 73.

The spelling of 871380816376816 in words is "eight hundred seventy-one trillion, three hundred eighty billion, eight hundred sixteen million, three hundred seventy-six thousand, eight hundred sixteen".