213044005404 has 72 divisors (see below), whose sum is σ = 553648761120. Its totient is φ = 69024638592.

The previous prime is 213044005387. The next prime is 213044005411. The reversal of 213044005404 is 404500440312.

It is a happy number.

213044005404 is a `hidden beast` number, since 213 + 0 + 4 + 40 + 0 + 5 + 404 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1228002 + ... + 1390710.

Almost surely, 2^213044005404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213044005404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (276824380560).

213044005404 is an abundant number, since it is smaller than the sum of its proper divisors (340604755716).

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

213044005404 is a wasteful number, since it uses less digits than its factorization.

213044005404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163739 (or 163734 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

Adding to 213044005404 its reverse (404500440312), we get a palindrome (617544445716).

The spelling of 213044005404 in words is "two hundred thirteen billion, forty-four million, five thousand, four hundred four".