82681335266543 has 8 divisors (see below), whose sum is σ = 89041786267728. Its totient is φ = 76320934020864.

The previous prime is 82681335266533. The next prime is 82681335266567. The reversal of 82681335266543 is 34566253318628.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 82681335266543 - 2⁸ = 82681335266287 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 (82681335266533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8951321 + ... + 15668082.

It is an arithmetic number, because the mean of its divisors is an integer number (11130223283466).

Almost surely, 2^{82681335266543} is an apocalyptic number.

82681335266543 is a deficient number, since it is larger than the sum of its proper divisors (6360451001185).

82681335266543 is a wasteful number, since it uses less digits than its factorization.

82681335266543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24877753.

The product of its digits is 149299200, while the sum is 62.

The spelling of 82681335266543 in words is "eighty-two trillion, six hundred eighty-one billion, three hundred thirty-five million, two hundred sixty-six thousand, five hundred forty-three".