868166635001 has 4 divisors (see below), whose sum is σ = 868169872500. Its totient is φ = 868163397504.

The previous prime is 868166634989. The next prime is 868166635003. The reversal of 868166635001 is 100536661868.

868166635001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 549733273600 + 318433361401 = 741440^2 + 564299^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-868166635001 is a prime.

It is a super-2 number, since 2×868166635001² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

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

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1176176 + ... + 1766273.

It is an arithmetic number, because the mean of its divisors is an integer number (217042468125).

Almost surely, 2^868166635001 is an apocalyptic number.

It is an amenable number.

868166635001 is a deficient number, since it is larger than the sum of its proper divisors (3237499).

868166635001 is a wasteful number, since it uses less digits than its factorization.

868166635001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3237498.

The product of its (nonzero) digits is 1244160, while the sum is 50.

The spelling of 868166635001 in words is "eight hundred sixty-eight billion, one hundred sixty-six million, six hundred thirty-five thousand, one".