67213281543 has 16 divisors (see below), whose sum is σ = 89823129312. Its totient is φ = 44706240000.

The previous prime is 67213281523. The next prime is 67213281589. The reversal of 67213281543 is 34518231276.

67213281543 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 67213281543 - 2¹⁴ = 67213265159 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 67213281495 and 67213281504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67213281523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3092133 + ... + 3113793.

It is an arithmetic number, because the mean of its divisors is an integer number (5613945582).

Almost surely, 2^67213281543 is an apocalyptic number.

67213281543 is a deficient number, since it is larger than the sum of its proper divisors (22609847769).

67213281543 is a wasteful number, since it uses less digits than its factorization.

67213281543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23986.

The product of its digits is 241920, while the sum is 42.

The spelling of 67213281543 in words is "sixty-seven billion, two hundred thirteen million, two hundred eighty-one thousand, five hundred forty-three".