866444428104 has 64 divisors (see below), whose sum is σ = 2234101789440. Its totient is φ = 279871065600.

The previous prime is 866444428043. The next prime is 866444428121. The reversal of 866444428104 is 401824444668.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3688669 + ... + 3916524.

It is an arithmetic number, because the mean of its divisors is an integer number (34907840460).

Almost surely, 2^866444428104 is an apocalyptic number.

It is an amenable number.

866444428104 is an abundant number, since it is smaller than the sum of its proper divisors (1367657361336).

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

866444428104 is a wasteful number, since it uses less digits than its factorization.

866444428104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7605350 (or 7605346 counting only the distinct ones).

The product of its (nonzero) digits is 4718592, while the sum is 51.

The spelling of 866444428104 in words is "eight hundred sixty-six billion, four hundred forty-four million, four hundred twenty-eight thousand, one hundred four".