404021911205412 has 36 divisors (see below), whose sum is σ = 1040546997732060. Its totient is φ = 132132952091712.

The previous prime is 404021911205357. The next prime is 404021911205441. The reversal of 404021911205412 is 214502119120404.

404021911205412 is a `hidden beast` number, since 4 + 0 + 4 + 0 + 2 + 1 + 91 + 1 + 20 + 541 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 215970770051136 + 188051141154276 = 14695944^2 + 13713174^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 105875760987 + ... + 105875764802.

It is an arithmetic number, because the mean of its divisors is an integer number (28904083270335).

Almost surely, 2^{404021911205412} is an apocalyptic number.

It is an amenable number.

404021911205412 is an abundant number, since it is smaller than the sum of its proper divisors (636525086526648).

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

404021911205412 is a wasteful number, since it uses less digits than its factorization.

404021911205412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211751525852 (or 211751525847 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The spelling of 404021911205412 in words is "four hundred four trillion, twenty-one billion, nine hundred eleven million, two hundred five thousand, four hundred twelve".