845000201020 has 48 divisors (see below), whose sum is σ = 1776178430208. Its totient is φ = 337680645120.

The previous prime is 845000201011. The next prime is 845000201021. The reversal of 845000201020 is 20102000548.

It is a junction number, because it is equal to n+sod(n) for n = 845000200982 and 845000201000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (845000201021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133762902 + ... + 133769218.

It is an arithmetic number, because the mean of its divisors is an integer number (37003717296).

Almost surely, 2^845000201020 is an apocalyptic number.

It is an amenable number.

845000201020 is an abundant number, since it is smaller than the sum of its proper divisors (931178229188).

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

845000201020 is a wasteful number, since it uses less digits than its factorization.

845000201020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11590 (or 11588 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

Adding to 845000201020 its reverse (20102000548), we get a palindrome (865102201568).

The spelling of 845000201020 in words is "eight hundred forty-five billion, two hundred one thousand, twenty".