866127313310808 has 64 divisors (see below), whose sum is σ = 2192737878374400. Its totient is φ = 285053193434880.

The previous prime is 866127313310767. The next prime is 866127313310869. The reversal of 866127313310808 is 808013313721668.

It is a super-2 number, since 2×866127313310808² (a number of 31 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 442199548 + ... + 444153908.

It is an arithmetic number, because the mean of its divisors is an integer number (34261529349600).

Almost surely, 2^{866127313310808} is an apocalyptic number.

It is an amenable number.

866127313310808 is an abundant number, since it is smaller than the sum of its proper divisors (1326610565063592).

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

866127313310808 is a wasteful number, since it uses less digits than its factorization.

866127313310808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2188192 (or 2188188 counting only the distinct ones).

The product of its (nonzero) digits is 6967296, while the sum is 57.

The spelling of 866127313310808 in words is "eight hundred sixty-six trillion, one hundred twenty-seven billion, three hundred thirteen million, three hundred ten thousand, eight hundred eight".