213561454223343 has 16 divisors (see below), whose sum is σ = 294568063866720. Its totient is φ = 137464591724544.

The previous prime is 213561454223339. The next prime is 213561454223413. The reversal of 213561454223343 is 343322454165312.

It is not a de Polignac number, because 213561454223343 - 2² = 213561454223339 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 213561454223292 and 213561454223301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213561454243343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53207055 + ... + 57079887.

It is an arithmetic number, because the mean of its divisors is an integer number (18410503991670).

Almost surely, 2^{213561454223343} is an apocalyptic number.

213561454223343 is a deficient number, since it is larger than the sum of its proper divisors (81006609643377).

213561454223343 is a wasteful number, since it uses less digits than its factorization.

213561454223343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4506698.

The product of its digits is 6220800, while the sum is 48.

The spelling of 213561454223343 in words is "two hundred thirteen trillion, five hundred sixty-one billion, four hundred fifty-four million, two hundred twenty-three thousand, three hundred forty-three".