871661242384 has 15 divisors (see below), whose sum is σ = 1688850892767. Its totient is φ = 435828753936.

The previous prime is 871661242307. The next prime is 871661242399. The reversal of 871661242384 is 483242166178.

The square root of 871661242384 is 933628.

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 polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 3617809 + ... + 3851215.

Almost surely, 2^871661242384 is an apocalyptic number.

871661242384 is the 933628-th square number.

It is an amenable number.

871661242384 is a deficient number, since it is larger than the sum of its proper divisors (817189650383).

871661242384 is an frugal number, since it uses more digits than its factorization.

871661242384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466822 (or 233409 counting only the distinct ones).

The product of its digits is 3096576, while the sum is 52.

The spelling of 871661242384 in words is "eight hundred seventy-one billion, six hundred sixty-one million, two hundred forty-two thousand, three hundred eighty-four".