866446703758416 has 160 divisors (see below), whose sum is σ = 2472280498920960. Its totient is φ = 259285307276800.

The previous prime is 866446703758399. The next prime is 866446703758423. The reversal of 866446703758416 is 614857307644668.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 98277946 + ... + 106730726.

It is an arithmetic number, because the mean of its divisors is an integer number (15451753118256).

Almost surely, 2^{866446703758416} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 866446703758416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1236140249460480).

866446703758416 is an abundant number, since it is smaller than the sum of its proper divisors (1605833795162544).

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

866446703758416 is a wasteful number, since it uses less digits than its factorization.

866446703758416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8455225 (or 8455219 counting only the distinct ones).

The product of its (nonzero) digits is 3901685760, while the sum is 75.

The spelling of 866446703758416 in words is "eight hundred sixty-six trillion, four hundred forty-six billion, seven hundred three million, seven hundred fifty-eight thousand, four hundred sixteen".