213045255405 has 64 divisors (see below), whose sum is σ = 380852870400. Its totient is φ = 112994196480.

The previous prime is 213045255403. The next prime is 213045255407. The reversal of 213045255405 is 504552540312.

213045255405 is a `hidden beast` number, since 21 + 30 + 4 + 52 + 554 + 0 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (213045255403) and next prime (213045255407).

It is not a de Polignac number, because 213045255405 - 2¹ = 213045255403 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 213045255405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213045255403) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 18270337 + ... + 18281993.

It is an arithmetic number, because the mean of its divisors is an integer number (5950826100).

Almost surely, 2^213045255405 is an apocalyptic number.

It is an amenable number.

213045255405 is a deficient number, since it is larger than the sum of its proper divisors (167807614995).

213045255405 is a wasteful number, since it uses less digits than its factorization.

213045255405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12411 (or 12405 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 36.

Adding to 213045255405 its reverse (504552540312), we get a palindrome (717597795717).

The spelling of 213045255405 in words is "two hundred thirteen billion, forty-five million, two hundred fifty-five thousand, four hundred five".