871620797716 has 12 divisors (see below), whose sum is σ = 1528045700832. Its totient is φ = 435036311768.

The previous prime is 871620797699. The next prime is 871620797741. The reversal of 871620797716 is 617797026178.

It is a super-2 number, since 2×871620797716² (a number of 25 digits) contains 22 as substring.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 193519240 + ... + 193523743.

It is an arithmetic number, because the mean of its divisors is an integer number (127337141736).

Almost surely, 2^871620797716 is an apocalyptic number.

It is an amenable number.

871620797716 is a deficient number, since it is larger than the sum of its proper divisors (656424903116).

871620797716 is a wasteful number, since it uses less digits than its factorization.

871620797716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387043550 (or 387043548 counting only the distinct ones).

The product of its (nonzero) digits is 12446784, while the sum is 61.

The spelling of 871620797716 in words is "eight hundred seventy-one billion, six hundred twenty million, seven hundred ninety-seven thousand, seven hundred sixteen".