866220863102 has 24 divisors (see below), whose sum is σ = 1512482359680. Its totient is φ = 370988130240.

The previous prime is 866220863099. The next prime is 866220863107. The reversal of 866220863102 is 201368022668.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866220863107) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2822174 + ... + 3114017.

It is an arithmetic number, because the mean of its divisors is an integer number (63020098320).

Almost surely, 2^866220863102 is an apocalyptic number.

866220863102 is a deficient number, since it is larger than the sum of its proper divisors (646261496578).

866220863102 is a wasteful number, since it uses less digits than its factorization.

866220863102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5937696 (or 5937689 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 44.

The spelling of 866220863102 in words is "eight hundred sixty-six billion, two hundred twenty million, eight hundred sixty-three thousand, one hundred two".