401045455220 has 12 divisors (see below), whose sum is σ = 842195456004. Its totient is φ = 160418182080.

The previous prime is 401045455123. The next prime is 401045455231. The reversal of 401045455220 is 22554540104.

It can be written as a sum of positive squares in 2 ways, for example, as 230580515344 + 170464939876 = 480188^2 + 412874^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10026136361 + ... + 10026136400.

It is an arithmetic number, because the mean of its divisors is an integer number (70182954667).

Almost surely, 2^401045455220 is an apocalyptic number.

It is an amenable number.

401045455220 is an abundant number, since it is smaller than the sum of its proper divisors (441150000784).

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

401045455220 is a wasteful number, since it uses less digits than its factorization.

401045455220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20052272770 (or 20052272768 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 32.

Adding to 401045455220 its reverse (22554540104), we get a palindrome (423599995324).

The spelling of 401045455220 in words is "four hundred one billion, forty-five million, four hundred fifty-five thousand, two hundred twenty".