871780750864 has 15 divisors (see below), whose sum is σ = 1689082440943. Its totient is φ = 435888508048.

The previous prime is 871780750853. The next prime is 871780750873. The reversal of 871780750864 is 468057087178.

The square root of 871780750864 is 933692.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 3618057 + ... + 3851479.

Almost surely, 2^871780750864 is an apocalyptic number.

871780750864 is the 933692-nd square number.

It is an amenable number.

871780750864 is a deficient number, since it is larger than the sum of its proper divisors (817301690079).

871780750864 is an frugal number, since it uses more digits than its factorization.

871780750864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466854 (or 233425 counting only the distinct ones).

The product of its (nonzero) digits is 21073920, while the sum is 61.

The spelling of 871780750864 in words is "eight hundred seventy-one billion, seven hundred eighty million, seven hundred fifty thousand, eight hundred sixty-four".