204242001671 has 2 divisors, whose sum is σ = 204242001672. Its totient is φ = 204242001670.

The previous prime is 204242001631. The next prime is 204242001673. The reversal of 204242001671 is 176100242402.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204242001671 is a prime.

Together with 204242001673, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204242001673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102121000835 + 102121000836.

It is an arithmetic number, because the mean of its divisors is an integer number (102121000836).

Almost surely, 2^204242001671 is an apocalyptic number.

204242001671 is a deficient number, since it is larger than the sum of its proper divisors (1).

204242001671 is an equidigital number, since it uses as much as digits as its factorization.

204242001671 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5376, while the sum is 29.

The spelling of 204242001671 in words is "two hundred four billion, two hundred forty-two million, one thousand, six hundred seventy-one".