866132653406736 has 20 divisors (see below), whose sum is σ = 2237509354634192. Its totient is φ = 288710884468896.

The previous prime is 866132653406723. The next prime is 866132653406747. The reversal of 866132653406736 is 637604356231668.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9022215139606 + ... + 9022215139701.

Almost surely, 2^{866132653406736} is an apocalyptic number.

It is an amenable number.

866132653406736 is an abundant number, since it is smaller than the sum of its proper divisors (1371376701227456).

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

866132653406736 is a wasteful number, since it uses less digits than its factorization.

866132653406736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18044430279318 (or 18044430279312 counting only the distinct ones).

The product of its (nonzero) digits is 470292480, while the sum is 66.

The spelling of 866132653406736 in words is "eight hundred sixty-six trillion, one hundred thirty-two billion, six hundred fifty-three million, four hundred six thousand, seven hundred thirty-six".