168442861825 has 72 divisors (see below), whose sum is σ = 246102105600. Its totient is φ = 114019234560.

The previous prime is 168442861789. The next prime is 168442861879. The reversal of 168442861825 is 528168244861.

It is a happy number.

168442861825 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 168442861825 - 2¹⁹ = 168442337537 is a prime.

It is an unprimeable number.

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 in 71 ways as a sum of consecutive naturals, for example, 113276232 + ... + 113277718.

It is an arithmetic number, because the mean of its divisors is an integer number (3418084800).

Almost surely, 2^168442861825 is an apocalyptic number.

It is an amenable number.

168442861825 is a deficient number, since it is larger than the sum of its proper divisors (77659243775).

168442861825 is a wasteful number, since it uses less digits than its factorization.

168442861825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2639 (or 2627 counting only the distinct ones).

The product of its digits is 5898240, while the sum is 55.

The spelling of 168442861825 in words is "one hundred sixty-eight billion, four hundred forty-two million, eight hundred sixty-one thousand, eight hundred twenty-five".