81704074671375 has 32 divisors (see below), whose sum is σ = 146413701819840. Its totient is φ = 40223544451200.

The previous prime is 81704074671367. The next prime is 81704074671389. The reversal of 81704074671375 is 57317647040718.

It is not a de Polignac number, because 81704074671375 - 2³ = 81704074671367 is a prime.

It is a super-3 number, since 3×81704074671375³ (a number of 43 digits) contains 333 as substring.

It is a congruent number.

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, 8379900220 + ... + 8379909969.

It is an arithmetic number, because the mean of its divisors is an integer number (4575428181870).

Almost surely, 2^{81704074671375} is an apocalyptic number.

81704074671375 is a deficient number, since it is larger than the sum of its proper divisors (64709627148465).

81704074671375 is a wasteful number, since it uses less digits than its factorization.

81704074671375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16759810220 (or 16759810210 counting only the distinct ones).

The product of its (nonzero) digits is 27659520, while the sum is 60.

The spelling of 81704074671375 in words is "eighty-one trillion, seven hundred four billion, seventy-four million, six hundred seventy-one thousand, three hundred seventy-five".