861882107916 has 12 divisors (see below), whose sum is σ = 2011058251832. Its totient is φ = 287294035968.

The previous prime is 861882107909. The next prime is 861882107969. The reversal of 861882107916 is 619701288168.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35911754485 + ... + 35911754508.

Almost surely, 2^861882107916 is an apocalyptic number.

It is an amenable number.

861882107916 is an abundant number, since it is smaller than the sum of its proper divisors (1149176143916).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

861882107916 is a wasteful number, since it uses less digits than its factorization.

861882107916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71823509000 (or 71823508998 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 57.

The spelling of 861882107916 in words is "eight hundred sixty-one billion, eight hundred eighty-two million, one hundred seven thousand, nine hundred sixteen".