213506232011164 has 24 divisors (see below), whose sum is σ = 375033498307776. Its totient is φ = 106353941568000.

The previous prime is 213506232011143. The next prime is 213506232011227. The reversal of 213506232011164 is 461110232605312.

213506232011164 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×213506232011164² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10997092 + ... + 23408299.

It is an arithmetic number, because the mean of its divisors is an integer number (15626395762824).

Almost surely, 2^{213506232011164} is an apocalyptic number.

It is an amenable number.

213506232011164 is a deficient number, since it is larger than the sum of its proper divisors (161527266296612).

213506232011164 is a wasteful number, since it uses less digits than its factorization.

213506232011164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34411197 (or 34411195 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 37.

Adding to 213506232011164 its reverse (461110232605312), we get a palindrome (674616464616476).

The spelling of 213506232011164 in words is "two hundred thirteen trillion, five hundred six billion, two hundred thirty-two million, eleven thousand, one hundred sixty-four".