204316772129 has 2 divisors, whose sum is σ = 204316772130. Its totient is φ = 204316772128.

The previous prime is 204316772117. The next prime is 204316772147. The reversal of 204316772129 is 921277613402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 151243210000 + 53073562129 = 388900^2 + 230377^2 .

It is a cyclic number.

It is not a de Polignac number, because 204316772129 - 2⁴ = 204316772113 is a prime.

It is a super-2 number, since 2×204316772129² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 204316772129.

It is not a weakly prime, because it can be changed into another prime (204316772159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102158386064 + 102158386065.

It is an arithmetic number, because the mean of its divisors is an integer number (102158386065).

Almost surely, 2^204316772129 is an apocalyptic number.

It is an amenable number.

204316772129 is a deficient number, since it is larger than the sum of its proper divisors (1).

204316772129 is an equidigital number, since it uses as much as digits as its factorization.

204316772129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 254016, while the sum is 44.

The spelling of 204316772129 in words is "two hundred four billion, three hundred sixteen million, seven hundred seventy-two thousand, one hundred twenty-nine".