202664000197 has 4 divisors (see below), whose sum is σ = 202738703980. Its totient is φ = 202589296416.

The previous prime is 202664000191. The next prime is 202664000221. The reversal of 202664000197 is 791000466202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 148256571681 + 54407428516 = 385041^2 + 233254^2 .

It is a cyclic number.

It is not a de Polignac number, because 202664000197 - 2²³ = 202655611589 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 (202664000191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37347822 + ... + 37353247.

It is an arithmetic number, because the mean of its divisors is an integer number (50684675995).

Almost surely, 2^202664000197 is an apocalyptic number.

202664000197 is the 240633-rd centered heptagonal number.

It is an amenable number.

202664000197 is a deficient number, since it is larger than the sum of its proper divisors (74703783).

202664000197 is an equidigital number, since it uses as much as digits as its factorization.

202664000197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74703782.

The product of its (nonzero) digits is 36288, while the sum is 37.

Adding to 202664000197 its reverse (791000466202), we get a palindrome (993664466399).

The spelling of 202664000197 in words is "two hundred two billion, six hundred sixty-four million, one hundred ninety-seven", and thus it is an aban number.