866472648245644 has 96 divisors (see below), whose sum is σ = 1751544477446400. Its totient is φ = 370918618076160.

The previous prime is 866472648245621. The next prime is 866472648245669. The reversal of 866472648245644 is 446542846274668.

It is a Harshad number since it is a multiple of its sum of digits (76).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 116579427 + ... + 123788965.

It is an arithmetic number, because the mean of its divisors is an integer number (18245254973400).

Almost surely, 2^{866472648245644} is an apocalyptic number.

It is an amenable number.

866472648245644 is an abundant number, since it is smaller than the sum of its proper divisors (885071829200756).

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

866472648245644 is a wasteful number, since it uses less digits than its factorization.

866472648245644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7210423 (or 7210421 counting only the distinct ones).

The product of its digits is 11890851840, while the sum is 76.

The spelling of 866472648245644 in words is "eight hundred sixty-six trillion, four hundred seventy-two billion, six hundred forty-eight million, two hundred forty-five thousand, six hundred forty-four".