213502542161 has 16 divisors (see below), whose sum is σ = 215797969920. Its totient is φ = 211221101520.

The previous prime is 213502542023. The next prime is 213502542167. The reversal of 213502542161 is 161245205312.

213502542161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213502542161 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (213502542167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43542836 + ... + 43547738.

It is an arithmetic number, because the mean of its divisors is an integer number (13487373120).

Almost surely, 2^213502542161 is an apocalyptic number.

It is an amenable number.

213502542161 is a deficient number, since it is larger than the sum of its proper divisors (2295427759).

213502542161 is a wasteful number, since it uses less digits than its factorization.

213502542161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6236.

The product of its (nonzero) digits is 14400, while the sum is 32.

Adding to 213502542161 its reverse (161245205312), we get a palindrome (374747747473).

The spelling of 213502542161 in words is "two hundred thirteen billion, five hundred two million, five hundred forty-two thousand, one hundred sixty-one".