866850180000 has 960 divisors, whose sum is σ = 3367217145600. Its totient is φ = 195084288000.

The previous prime is 866850179981. The next prime is 866850180011. The reversal of 866850180000 is 81058668.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 1502339712 + ... + 1502340288.

It is an arithmetic number, because the mean of its divisors is an integer number (3507517860).

Almost surely, 2^866850180000 is an apocalyptic number.

866850180000 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 866850180000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1683608572800).

866850180000 is an abundant number, since it is smaller than the sum of its proper divisors (2500366965600).

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

866850180000 is an equidigital number, since it uses as much as digits as its factorization.

866850180000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 704 (or 667 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 42.

The spelling of 866850180000 in words is "eight hundred sixty-six billion, eight hundred fifty million, one hundred eighty thousand".