204161262997 has 2 divisors, whose sum is σ = 204161262998. Its totient is φ = 204161262996.

The previous prime is 204161262971. The next prime is 204161263043. The reversal of 204161262997 is 799262161402.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 196545035556 + 7616227441 = 443334^2 + 87271^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204161262997 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 204161262997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204161262947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102080631498 + 102080631499.

It is an arithmetic number, because the mean of its divisors is an integer number (102080631499).

Almost surely, 2^204161262997 is an apocalyptic number.

It is an amenable number.

204161262997 is a deficient number, since it is larger than the sum of its proper divisors (1).

204161262997 is an equidigital number, since it uses as much as digits as its factorization.

204161262997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 653184, while the sum is 49.

The spelling of 204161262997 in words is "two hundred four billion, one hundred sixty-one million, two hundred sixty-two thousand, nine hundred ninety-seven".