85668492123 has 6 divisors (see below), whose sum is σ = 123743377524. Its totient is φ = 57112328076.

The previous prime is 85668492113. The next prime is 85668492211. The reversal of 85668492123 is 32129486658.

85668492123 is a `hidden beast` number, since 85 + 6 + 68 + 492 + 12 + 3 = 666.

It is not a de Polignac number, because 85668492123 - 2⁹ = 85668491611 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85668492123.

It is not an unprimeable number, because it can be changed into a prime (85668492113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4759360665 + ... + 4759360682.

It is an arithmetic number, because the mean of its divisors is an integer number (20623896254).

Almost surely, 2^85668492123 is an apocalyptic number.

85668492123 is a deficient number, since it is larger than the sum of its proper divisors (38074885401).

85668492123 is a wasteful number, since it uses less digits than its factorization.

85668492123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9518721353 (or 9518721350 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 54.

The spelling of 85668492123 in words is "eighty-five billion, six hundred sixty-eight million, four hundred ninety-two thousand, one hundred twenty-three".