171693145693 has 16 divisors (see below), whose sum is σ = 177693873280. Its totient is φ = 165765268800.

The previous prime is 171693145681. The next prime is 171693145739. The reversal of 171693145693 is 396541396171.

It is not a de Polignac number, because 171693145693 - 2⁹ = 171693145181 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 (171693145643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11415088 + ... + 11430118.

It is an arithmetic number, because the mean of its divisors is an integer number (11105867080).

Almost surely, 2^171693145693 is an apocalyptic number.

It is an amenable number.

171693145693 is a deficient number, since it is larger than the sum of its proper divisors (6000727587).

171693145693 is a wasteful number, since it uses less digits than its factorization.

171693145693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17428.

The product of its digits is 3674160, while the sum is 55.

The spelling of 171693145693 in words is "one hundred seventy-one billion, six hundred ninety-three million, one hundred forty-five thousand, six hundred ninety-three".