859163044666 has 16 divisors (see below), whose sum is σ = 1356591274560. Its totient is φ = 406966554720.

The previous prime is 859163044661. The next prime is 859163044687. The reversal of 859163044666 is 666440361958.

It is a happy number.

It is a super-2 number, since 2×859163044666² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 859163044666.

It is not an unprimeable number, because it can be changed into a prime (859163044661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5546731 + ... + 5699521.

It is an arithmetic number, because the mean of its divisors is an integer number (84786954660).

Almost surely, 2^859163044666 is an apocalyptic number.

859163044666 is a deficient number, since it is larger than the sum of its proper divisors (497428229894).

859163044666 is a wasteful number, since it uses less digits than its factorization.

859163044666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300789.

The product of its (nonzero) digits is 22394880, while the sum is 58.

The spelling of 859163044666 in words is "eight hundred fifty-nine billion, one hundred sixty-three million, forty-four thousand, six hundred sixty-six".