868343225778 has 90 divisors (see below), whose sum is σ = 2263619008431. Its totient is φ = 248074343496.

The previous prime is 868343225767. The next prime is 868343225803. The reversal of 868343225778 is 877522343868.

868343225778 is a `hidden beast` number, since 8 + 6 + 8 + 34 + 3 + 22 + 577 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 434171612889 + 434171612889 = 658917^2 + 658917^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=658917.

It is a Harshad number since it is a multiple of its sum of digits (63).

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 44 ways as a sum of consecutive naturals, for example, 83018313 + ... + 83028771.

Almost surely, 2^868343225778 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 868343225778

868343225778 is an abundant number, since it is smaller than the sum of its proper divisors (1395275782653).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

868343225778 is an frugal number, since it uses more digits than its factorization.

868343225778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20946 (or 10471 counting only the distinct ones).

The product of its digits is 108380160, while the sum is 63.

The spelling of 868343225778 in words is "eight hundred sixty-eight billion, three hundred forty-three million, two hundred twenty-five thousand, seven hundred seventy-eight".