213212643712651 has 64 divisors (see below), whose sum is σ = 241229102349312. Its totient is φ = 186810624000000.

The previous prime is 213212643712643. The next prime is 213212643712657. The reversal of 213212643712651 is 156217346212312.

It is not a de Polignac number, because 213212643712651 - 2³ = 213212643712643 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213212643712657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3691901026 + ... + 3691958776.

It is an arithmetic number, because the mean of its divisors is an integer number (3769204724208).

Almost surely, 2^{213212643712651} is an apocalyptic number.

213212643712651 is a deficient number, since it is larger than the sum of its proper divisors (28016458636661).

213212643712651 is a wasteful number, since it uses less digits than its factorization.

213212643712651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58484.

The product of its digits is 725760, while the sum is 46.

Adding to 213212643712651 its reverse (156217346212312), we get a palindrome (369429989924963).

The spelling of 213212643712651 in words is "two hundred thirteen trillion, two hundred twelve billion, six hundred forty-three million, seven hundred twelve thousand, six hundred fifty-one".