866280000800 has 36 divisors (see below), whose sum is σ = 2114806053906. Its totient is φ = 346512000000.

The previous prime is 866280000763. The next prime is 866280000841. The reversal of 866280000800 is 8000082668.

It can be written as a sum of positive squares in 3 ways, for example, as 823977383824 + 42302616976 = 907732^2 + 205676^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 541424201 + ... + 541425800.

Almost surely, 2^866280000800 is an apocalyptic number.

866280000800 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

866280000800 is an abundant number, since it is smaller than the sum of its proper divisors (1248526053106).

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

866280000800 is a wasteful number, since it uses less digits than its factorization.

866280000800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1082850021 (or 1082850008 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 38.

The spelling of 866280000800 in words is "eight hundred sixty-six billion, two hundred eighty million, eight hundred", and thus it is an aban number.