846880308121 has 9 divisors (see below), whose sum is σ = 899643797661. Its totient is φ = 797049095232.

The previous prime is 846880308119. The next prime is 846880308151. The reversal of 846880308121 is 121803088648.

The square root of 846880308121 is 920261.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 166618259721 + 680262048400 = 408189^2 + 824780^2 .

It is not a de Polignac number, because 846880308121 - 2¹ = 846880308119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (846880308101) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 15617371 + ... + 15671503.

Almost surely, 2^846880308121 is an apocalyptic number.

846880308121 is the 920261-st square number.

846880308121 is the 460131-st centered octagonal number.

It is an amenable number.

846880308121 is a deficient number, since it is larger than the sum of its proper divisors (52763489540).

846880308121 is an frugal number, since it uses more digits than its factorization.

846880308121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108300 (or 54150 counting only the distinct ones).

The product of its (nonzero) digits is 589824, while the sum is 49.

Multiplying 846880308121 by its sum of digits (49), we get a square (41497135097929 = 6441827²).

The spelling of 846880308121 in words is "eight hundred forty-six billion, eight hundred eighty million, three hundred eight thousand, one hundred twenty-one".