856103152321 has 8 divisors (see below), whose sum is σ = 857647980000. Its totient is φ = 854559625920.

The previous prime is 856103152319. The next prime is 856103152361. The reversal of 856103152321 is 123251301658.

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

It is a cyclic number.

It is not a de Polignac number, because 856103152321 - 2¹ = 856103152319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (856103152361) 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, 996490 + ... + 1644748.

It is an arithmetic number, because the mean of its divisors is an integer number (107205997500).

Almost surely, 2^856103152321 is an apocalyptic number.

It is an amenable number.

856103152321 is a deficient number, since it is larger than the sum of its proper divisors (1544827679).

856103152321 is a wasteful number, since it uses less digits than its factorization.

856103152321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 650639.

The product of its (nonzero) digits is 43200, while the sum is 37.

Adding to 856103152321 its reverse (123251301658), we get a palindrome (979354453979).

The spelling of 856103152321 in words is "eight hundred fifty-six billion, one hundred three million, one hundred fifty-two thousand, three hundred twenty-one".