866786462027444 has 24 divisors (see below), whose sum is σ = 1733590090232448. Its totient is φ = 371476233830880.

The previous prime is 866786462027351. The next prime is 866786462027467. The reversal of 866786462027444 is 444720264687668.

It is a congruent number.

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, 150390344 + ... + 156047519.

It is an arithmetic number, because the mean of its divisors is an integer number (72232920426352).

Almost surely, 2^{866786462027444} is an apocalyptic number.

It is an amenable number.

866786462027444 is an abundant number, since it is smaller than the sum of its proper divisors (866803628205004).

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

866786462027444 is a wasteful number, since it uses less digits than its factorization.

866786462027444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306538895 (or 306538893 counting only the distinct ones).

The product of its (nonzero) digits is 4161798144, while the sum is 74.

The spelling of 866786462027444 in words is "eight hundred sixty-six trillion, seven hundred eighty-six billion, four hundred sixty-two million, twenty-seven thousand, four hundred forty-four".