866788526230121 has 8 divisors (see below), whose sum is σ = 945623446944384. Its totient is φ = 787959599479920.

The previous prime is 866788526230111. The next prime is 866788526230141. The reversal of 866788526230121 is 121032625887668.

It is a happy number.

866788526230121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-866788526230121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (866788526230111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1498188641 + ... + 1498767086.

It is an arithmetic number, because the mean of its divisors is an integer number (118202930868048).

Almost surely, 2^{866788526230121} is an apocalyptic number.

It is an amenable number.

866788526230121 is a deficient number, since it is larger than the sum of its proper divisors (78834920714263).

866788526230121 is a wasteful number, since it uses less digits than its factorization.

866788526230121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2996982031.

The product of its (nonzero) digits is 92897280, while the sum is 65.

The spelling of 866788526230121 in words is "eight hundred sixty-six trillion, seven hundred eighty-eight billion, five hundred twenty-six million, two hundred thirty thousand, one hundred twenty-one".