81673014425675 has 12 divisors (see below), whose sum is σ = 101274652051320. Its totient is φ = 65338337886720.

The previous prime is 81673014425663. The next prime is 81673014425683. The reversal of 81673014425675 is 57652441037618.

It is a happy number.

It is not a de Polignac number, because 81673014425675 - 2³² = 81668719458379 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36146744 + ... + 38339706.

It is an arithmetic number, because the mean of its divisors is an integer number (8439554337610).

Almost surely, 2^{81673014425675} is an apocalyptic number.

81673014425675 is a deficient number, since it is larger than the sum of its proper divisors (19601637625645).

81673014425675 is a wasteful number, since it uses less digits than its factorization.

81673014425675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3682702 (or 3682697 counting only the distinct ones).

The product of its (nonzero) digits is 33868800, while the sum is 59.

The spelling of 81673014425675 in words is "eighty-one trillion, six hundred seventy-three billion, fourteen million, four hundred twenty-five thousand, six hundred seventy-five".