213440210055 has 64 divisors (see below), whose sum is σ = 388426752000. Its totient is φ = 111152839680.

The previous prime is 213440209993. The next prime is 213440210083. The reversal of 213440210055 is 550012044312.

213440210055 is a `hidden beast` number, since 2 + 1 + 3 + 440 + 210 + 0 + 5 + 5 = 666.

It is not a de Polignac number, because 213440210055 - 2²⁰ = 213439161479 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2695671 + ... + 2773719.

It is an arithmetic number, because the mean of its divisors is an integer number (6069168000).

Almost surely, 2^213440210055 is an apocalyptic number.

213440210055 is a deficient number, since it is larger than the sum of its proper divisors (174986541945).

213440210055 is a wasteful number, since it uses less digits than its factorization.

213440210055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78541 (or 78535 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

Adding to 213440210055 its reverse (550012044312), we get a palindrome (763452254367).

The spelling of 213440210055 in words is "two hundred thirteen billion, four hundred forty million, two hundred ten thousand, fifty-five".