285108621671 has 2 divisors, whose sum is σ = 285108621672. Its totient is φ = 285108621670.

The previous prime is 285108621643. The next prime is 285108621751. The reversal of 285108621671 is 176126801582.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 285108621671 - 2³⁰ = 284034879847 is a prime.

It is a super-2 number, since 2×285108621671² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (285108621601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142554310835 + 142554310836.

It is an arithmetic number, because the mean of its divisors is an integer number (142554310836).

Almost surely, 2^285108621671 is an apocalyptic number.

285108621671 is a deficient number, since it is larger than the sum of its proper divisors (1).

285108621671 is an equidigital number, since it uses as much as digits as its factorization.

285108621671 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 322560, while the sum is 47.

The spelling of 285108621671 in words is "two hundred eighty-five billion, one hundred eight million, six hundred twenty-one thousand, six hundred seventy-one".