201660932697 has 24 divisors (see below), whose sum is σ = 321234320064. Its totient is φ = 110224603104.

The previous prime is 201660932647. The next prime is 201660932777. The reversal of 201660932697 is 796239066102.

It is not a de Polignac number, because 201660932697 - 2¹⁹ = 201660408409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201660932647) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 9065358 + ... + 9087575.

It is an arithmetic number, because the mean of its divisors is an integer number (13384763336).

Almost surely, 2^201660932697 is an apocalyptic number.

It is an amenable number.

201660932697 is a deficient number, since it is larger than the sum of its proper divisors (119573387367).

201660932697 is a wasteful number, since it uses less digits than its factorization.

201660932697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18152989 (or 18152966 counting only the distinct ones).

The product of its (nonzero) digits is 1469664, while the sum is 51.

Adding to 201660932697 its reverse (796239066102), we get a palindrome (997899998799).

The spelling of 201660932697 in words is "two hundred one billion, six hundred sixty million, nine hundred thirty-two thousand, six hundred ninety-seven".