213402004044 has 12 divisors (see below), whose sum is σ = 497938009464. Its totient is φ = 71134001344.

The previous prime is 213402004043. The next prime is 213402004061. The reversal of 213402004044 is 440400204312.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (213402004043) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 8891750157 + ... + 8891750180.

It is an arithmetic number, because the mean of its divisors is an integer number (41494834122).

Almost surely, 2^213402004044 is an apocalyptic number.

It is an amenable number.

213402004044 is an abundant number, since it is smaller than the sum of its proper divisors (284536005420).

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

213402004044 is a wasteful number, since it uses less digits than its factorization.

213402004044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17783500344 (or 17783500342 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 213402004044 its reverse (440400204312), we get a palindrome (653802208356).

The spelling of 213402004044 in words is "two hundred thirteen billion, four hundred two million, four thousand, forty-four".