866870962272 has 576 divisors, whose sum is σ = 3124687104000. Its totient is φ = 232465572864.

The previous prime is 866870962259. The next prime is 866870962301. The reversal of 866870962272 is 272269078668.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 87672913 + ... + 87682799.

It is an arithmetic number, because the mean of its divisors is an integer number (5424804000).

Almost surely, 2^866870962272 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 866870962272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1562343552000).

866870962272 is an abundant number, since it is smaller than the sum of its proper divisors (2257816141728).

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

866870962272 is a wasteful number, since it uses less digits than its factorization.

866870962272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10048 (or 10027 counting only the distinct ones).

The product of its (nonzero) digits is 48771072, while the sum is 63.

The spelling of 866870962272 in words is "eight hundred sixty-six billion, eight hundred seventy million, nine hundred sixty-two thousand, two hundred seventy-two".