866802148730827 has 8 divisors (see below), whose sum is σ = 877629696714176. Its totient is φ = 856013201632512.

The previous prime is 866802148730813. The next prime is 866802148730839. The reversal of 866802148730827 is 728037841208668.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 866802148730827 - 2¹¹ = 866802148728779 is a prime.

It is a super-4 number, since 4×866802148730827⁴ (a number of 61 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (866802148230827) 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, 9650176068 + ... + 9650265889.

It is an arithmetic number, because the mean of its divisors is an integer number (109703712089272).

Almost surely, 2^{866802148730827} is an apocalyptic number.

866802148730827 is a deficient number, since it is larger than the sum of its proper divisors (10827547983349).

866802148730827 is a wasteful number, since it uses less digits than its factorization.

866802148730827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19300442517.

The product of its (nonzero) digits is 346816512, while the sum is 70.

The spelling of 866802148730827 in words is "eight hundred sixty-six trillion, eight hundred two billion, one hundred forty-eight million, seven hundred thirty thousand, eight hundred twenty-seven".