871660861843 has 8 divisors (see below), whose sum is σ = 911997665568. Its totient is φ = 831527266944.

The previous prime is 871660861817. The next prime is 871660861853. The reversal of 871660861843 is 348168066178.

It is a happy number.

871660861843 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-871660861843 is a prime.

It is a super-3 number, since 3×871660861843³ (a number of 37 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (871660861853) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50793430 + ... + 50810587.

It is an arithmetic number, because the mean of its divisors is an integer number (113999708196).

Almost surely, 2^871660861843 is an apocalyptic number.

871660861843 is a deficient number, since it is larger than the sum of its proper divisors (40336803725).

871660861843 is a wasteful number, since it uses less digits than its factorization.

871660861843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101604413.

The product of its (nonzero) digits is 9289728, while the sum is 58.

The spelling of 871660861843 in words is "eight hundred seventy-one billion, six hundred sixty million, eight hundred sixty-one thousand, eight hundred forty-three".