203688457206271 has 2 divisors, whose sum is σ = 203688457206272. Its totient is φ = 203688457206270.

The previous prime is 203688457206263. The next prime is 203688457206313. The reversal of 203688457206271 is 172602754886302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 203688457206271 - 2³ = 203688457206263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203688457206371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101844228603135 + 101844228603136.

It is an arithmetic number, because the mean of its divisors is an integer number (101844228603136).

Almost surely, 2^{203688457206271} is an apocalyptic number.

203688457206271 is a deficient number, since it is larger than the sum of its proper divisors (1).

203688457206271 is an equidigital number, since it uses as much as digits as its factorization.

203688457206271 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54190080, while the sum is 61.

The spelling of 203688457206271 in words is "two hundred three trillion, six hundred eighty-eight billion, four hundred fifty-seven million, two hundred six thousand, two hundred seventy-one".