197145326165 has 16 divisors (see below), whose sum is σ = 237909436416. Its totient is φ = 156828724800.

The previous prime is 197145326141. The next prime is 197145326167. The reversal of 197145326165 is 561623541791.

It is not a de Polignac number, because 197145326165 - 2⁶ = 197145326101 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 (197145326167) 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, 478355 + ... + 789375.

It is an arithmetic number, because the mean of its divisors is an integer number (14869339776).

Almost surely, 2^197145326165 is an apocalyptic number.

It is an amenable number.

197145326165 is a deficient number, since it is larger than the sum of its proper divisors (40764110251).

197145326165 is a wasteful number, since it uses less digits than its factorization.

197145326165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311740.

The product of its digits is 1360800, while the sum is 50.

The spelling of 197145326165 in words is "one hundred ninety-seven billion, one hundred forty-five million, three hundred twenty-six thousand, one hundred sixty-five".