204147253771 has 2 divisors, whose sum is σ = 204147253772. Its totient is φ = 204147253770.

The previous prime is 204147253769. The next prime is 204147253823. The reversal of 204147253771 is 177352741402.

204147253771 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 204147253771 - 2¹ = 204147253769 is a prime.

It is a super-2 number, since 2×204147253771² (a number of 23 digits) contains 22 as substring.

Together with 204147253769, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (204147253721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102073626885 + 102073626886.

It is an arithmetic number, because the mean of its divisors is an integer number (102073626886).

Almost surely, 2^204147253771 is an apocalyptic number.

204147253771 is a deficient number, since it is larger than the sum of its proper divisors (1).

204147253771 is an equidigital number, since it uses as much as digits as its factorization.

204147253771 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 329280, while the sum is 43.

The spelling of 204147253771 in words is "two hundred four billion, one hundred forty-seven million, two hundred fifty-three thousand, seven hundred seventy-one".