866012148000 has 576 divisors, whose sum is σ = 3241546439040. Its totient is φ = 227007360000.

The previous prime is 866012147977. The next prime is 866012148013. The reversal of 866012148000 is 841210668.

866012148000 is a `hidden beast` number, since 8 + 6 + 601 + 2 + 1 + 48 + 0 + 0 + 0 = 666.

It is a super-3 number, since 3×866012148000³ (a number of 37 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 57340450 + ... + 57355550.

It is an arithmetic number, because the mean of its divisors is an integer number (5627684790).

Almost surely, 2^866012148000 is an apocalyptic number.

866012148000 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 866012148000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1620773219520).

866012148000 is an abundant number, since it is smaller than the sum of its proper divisors (2375534291040).

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

866012148000 is a wasteful number, since it uses less digits than its factorization.

866012148000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15200 (or 15170 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

Adding to 866012148000 its reverse (841210668), we get a palindrome (866853358668).

The spelling of 866012148000 in words is "eight hundred sixty-six billion, twelve million, one hundred forty-eight thousand".