228321651871 has 2 divisors, whose sum is σ = 228321651872. Its totient is φ = 228321651870.

The previous prime is 228321651757. The next prime is 228321651923. The reversal of 228321651871 is 178156123822.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 228321651871 - 2⁹ = 228321651359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228321651671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114160825935 + 114160825936.

It is an arithmetic number, because the mean of its divisors is an integer number (114160825936).

Almost surely, 2^228321651871 is an apocalyptic number.

228321651871 is a deficient number, since it is larger than the sum of its proper divisors (1).

228321651871 is an equidigital number, since it uses as much as digits as its factorization.

228321651871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 322560, while the sum is 46.

The spelling of 228321651871 in words is "two hundred twenty-eight billion, three hundred twenty-one million, six hundred fifty-one thousand, eight hundred seventy-one".