213244610044145 has 4 divisors (see below), whose sum is σ = 255893532052980. Its totient is φ = 170595688035312.

The previous prime is 213244610044099. The next prime is 213244610044163. The reversal of 213244610044145 is 541440016442312.

213244610044145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 158260249503409 + 54984360540736 = 12580153^2 + 7415144^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213244610044145 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21324461004410 + ... + 21324461004419.

It is an arithmetic number, because the mean of its divisors is an integer number (63973383013245).

Almost surely, 2^{213244610044145} is an apocalyptic number.

It is an amenable number.

213244610044145 is a deficient number, since it is larger than the sum of its proper divisors (42648922008835).

213244610044145 is an equidigital number, since it uses as much as digits as its factorization.

213244610044145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42648922008834.

The product of its (nonzero) digits is 368640, while the sum is 41.

Adding to 213244610044145 its reverse (541440016442312), we get a palindrome (754684626486457).

The spelling of 213244610044145 in words is "two hundred thirteen trillion, two hundred forty-four billion, six hundred ten million, forty-four thousand, one hundred forty-five".