866262262668 has 96 divisors (see below), whose sum is σ = 2234714372352. Its totient is φ = 258993196800.

The previous prime is 866262262627. The next prime is 866262262681.

866262262668 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2846730 + ... + 3136302.

It is an arithmetic number, because the mean of its divisors is an integer number (23278274712).

Almost surely, 2^866262262668 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 866262262668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1117357186176).

866262262668 is an abundant number, since it is smaller than the sum of its proper divisors (1368452109684).

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

866262262668 is a wasteful number, since it uses less digits than its factorization.

866262262668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289895 (or 289893 counting only the distinct ones).

The product of its digits is 47775744, while the sum is 60.

The spelling of 866262262668 in words is "eight hundred sixty-six billion, two hundred sixty-two million, two hundred sixty-two thousand, six hundred sixty-eight".