213144407672 has 32 divisors (see below), whose sum is σ = 463555009920. Its totient is φ = 89984204640.

The previous prime is 213144407653. The next prime is 213144407677. The reversal of 213144407672 is 276704441312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213144407677) 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 7 ways as a sum of consecutive naturals, for example, 28400354 + ... + 28407857.

It is an arithmetic number, because the mean of its divisors is an integer number (14486094060).

Almost surely, 2^213144407672 is an apocalyptic number.

It is an amenable number.

213144407672 is an abundant number, since it is smaller than the sum of its proper divisors (250410602248).

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

213144407672 is a wasteful number, since it uses less digits than its factorization.

213144407672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56808291 (or 56808287 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 41.

Adding to 213144407672 its reverse (276704441312), we get a palindrome (489848848984).

The spelling of 213144407672 in words is "two hundred thirteen billion, one hundred forty-four million, four hundred seven thousand, six hundred seventy-two".