866228651630 has 32 divisors (see below), whose sum is σ = 1609683978240. Its totient is φ = 335277804960.

The previous prime is 866228651581. The next prime is 866228651633. The reversal of 866228651630 is 36156822668.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866228651633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2791097 + ... + 3085883.

It is an arithmetic number, because the mean of its divisors is an integer number (50302624320).

Almost surely, 2^866228651630 is an apocalyptic number.

866228651630 is a deficient number, since it is larger than the sum of its proper divisors (743455326610).

866228651630 is a wasteful number, since it uses less digits than its factorization.

866228651630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304304.

The product of its (nonzero) digits is 4976640, while the sum is 53.

The spelling of 866228651630 in words is "eight hundred sixty-six billion, two hundred twenty-eight million, six hundred fifty-one thousand, six hundred thirty".