285218671123 has 2 divisors, whose sum is σ = 285218671124. Its totient is φ = 285218671122.

The previous prime is 285218671043. The next prime is 285218671169. The reversal of 285218671123 is 321176812582.

It is a happy number.

It is an a-pointer prime, because the next prime (285218671169) can be obtained adding 285218671123 to its sum of digits (46).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 285218671123 - 2²⁹ = 284681800211 is a prime.

It is a super-2 number, since 2×285218671123² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (285218671823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142609335561 + 142609335562.

It is an arithmetic number, because the mean of its divisors is an integer number (142609335562).

Almost surely, 2^285218671123 is an apocalyptic number.

285218671123 is a deficient number, since it is larger than the sum of its proper divisors (1).

285218671123 is an equidigital number, since it uses as much as digits as its factorization.

285218671123 is an evil number, because the sum of its binary digits is even.

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

The spelling of 285218671123 in words is "two hundred eighty-five billion, two hundred eighteen million, six hundred seventy-one thousand, one hundred twenty-three".