866786465702444 has 24 divisors (see below), whose sum is σ = 1733792844688128. Its totient is φ = 371432789597520.

The previous prime is 866786465702401. The next prime is 866786465702453. The reversal of 866786465702444 is 444207564687668.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1963286792 + ... + 1963728239.

It is an arithmetic number, because the mean of its divisors is an integer number (72241368528672).

Almost surely, 2^{866786465702444} is an apocalyptic number.

It is an amenable number.

866786465702444 is an abundant number, since it is smaller than the sum of its proper divisors (867006378985684).

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

866786465702444 is a wasteful number, since it uses less digits than its factorization.

866786465702444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3927022925 (or 3927022923 counting only the distinct ones).

The product of its (nonzero) digits is 10404495360, while the sum is 77.

The spelling of 866786465702444 in words is "eight hundred sixty-six trillion, seven hundred eighty-six billion, four hundred sixty-five million, seven hundred two thousand, four hundred forty-four".