85168161623 has 2 divisors, whose sum is σ = 85168161624. Its totient is φ = 85168161622.

The previous prime is 85168161613. The next prime is 85168161649. The reversal of 85168161623 is 32616186158.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85168161623 - 2⁸ = 85168161367 is a prime.

It is a super-3 number, since 3×85168161623³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85168161613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42584080811 + 42584080812.

It is an arithmetic number, because the mean of its divisors is an integer number (42584080812).

Almost surely, 2^85168161623 is an apocalyptic number.

85168161623 is a deficient number, since it is larger than the sum of its proper divisors (1).

85168161623 is an equidigital number, since it uses as much as digits as its factorization.

85168161623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 414720, while the sum is 47.

The spelling of 85168161623 in words is "eighty-five billion, one hundred sixty-eight million, one hundred sixty-one thousand, six hundred twenty-three".