866162306781232 has 20 divisors (see below), whose sum is σ = 1680081453034416. Its totient is φ = 432592899546560.

The previous prime is 866162306781199. The next prime is 866162306781271. The reversal of 866162306781232 is 232187603261668.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30515850619 + ... + 30515879002.

Almost surely, 2^{866162306781232} is an apocalyptic number.

It is an amenable number.

866162306781232 is a deficient number, since it is larger than the sum of its proper divisors (813919146253184).

866162306781232 is a wasteful number, since it uses less digits than its factorization.

866162306781232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61031730516 (or 61031730510 counting only the distinct ones).

The product of its (nonzero) digits is 41803776, while the sum is 61.

The spelling of 866162306781232 in words is "eight hundred sixty-six trillion, one hundred sixty-two billion, three hundred six million, seven hundred eighty-one thousand, two hundred thirty-two".