213555401144 has 8 divisors (see below), whose sum is σ = 400416377160. Its totient is φ = 106777700568.

The previous prime is 213555401141. The next prime is 213555401153. The reversal of 213555401144 is 441104555312.

It is a happy number.

213555401144 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213555401141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13347212564 + ... + 13347212579.

It is an arithmetic number, because the mean of its divisors is an integer number (50052047145).

Almost surely, 2^213555401144 is an apocalyptic number.

It is an amenable number.

213555401144 is a deficient number, since it is larger than the sum of its proper divisors (186860976016).

213555401144 is a wasteful number, since it uses less digits than its factorization.

213555401144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26694425149 (or 26694425145 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 35.

Adding to 213555401144 its reverse (441104555312), we get a palindrome (654659956456).

The spelling of 213555401144 in words is "two hundred thirteen billion, five hundred fifty-five million, four hundred one thousand, one hundred forty-four".