868166635000 has 160 divisors (see below), whose sum is σ = 2328219606240. Its totient is φ = 297206784000.

The previous prime is 868166634989. The next prime is 868166635003. The reversal of 868166635000 is 536661868.

It is a super-2 number, since 2×868166635000² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (868166635003) by changing a digit.

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 39 ways as a sum of consecutive naturals, for example, 23536572 + ... + 23573428.

It is an arithmetic number, because the mean of its divisors is an integer number (14551372539).

Almost surely, 2^868166635000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 868166635000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1164109803120).

868166635000 is an abundant number, since it is smaller than the sum of its proper divisors (1460052971240).

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

868166635000 is a wasteful number, since it uses less digits than its factorization.

868166635000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37563 (or 37544 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 49.

The spelling of 868166635000 in words is "eight hundred sixty-eight billion, one hundred sixty-six million, six hundred thirty-five thousand".