82681335266545 has 32 divisors (see below), whose sum is σ = 104818063996800. Its totient is φ = 62436749243904.

The previous prime is 82681335266533. The next prime is 82681335266567. The reversal of 82681335266545 is 54566253318628.

It is a cyclic number.

It is not a de Polignac number, because 82681335266545 - 2⁷ = 82681335266417 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 133103286 + ... + 133723024.

It is an arithmetic number, because the mean of its divisors is an integer number (3275564499900).

Almost surely, 2^{82681335266545} is an apocalyptic number.

It is an amenable number.

82681335266545 is a deficient number, since it is larger than the sum of its proper divisors (22136728730255).

82681335266545 is a wasteful number, since it uses less digits than its factorization.

82681335266545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624849.

The product of its digits is 248832000, while the sum is 64.

The spelling of 82681335266545 in words is "eighty-two trillion, six hundred eighty-one billion, three hundred thirty-five million, two hundred sixty-six thousand, five hundred forty-five".