84731347205543 has 4 divisors (see below), whose sum is σ = 84861104246328. Its totient is φ = 84601590164760.

The previous prime is 84731347205441. The next prime is 84731347205551. The reversal of 84731347205543 is 34550274313748.

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

It is a cyclic number.

It is not a de Polignac number, because 84731347205543 - 2²⁸ = 84731078770087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84731347205143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64878519413 + ... + 64878520718.

It is an arithmetic number, because the mean of its divisors is an integer number (21215276061582).

Almost surely, 2^{84731347205543} is an apocalyptic number.

84731347205543 is a deficient number, since it is larger than the sum of its proper divisors (129757040785).

84731347205543 is a wasteful number, since it uses less digits than its factorization.

84731347205543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129757040784.

The product of its (nonzero) digits is 33868800, while the sum is 56.

The spelling of 84731347205543 in words is "eighty-four trillion, seven hundred thirty-one billion, three hundred forty-seven million, two hundred five thousand, five hundred forty-three".