68828662242 has 18 divisors (see below), whose sum is σ = 149131179873. Its totient is φ = 22942516392.

The previous prime is 68828662223. The next prime is 68828662261. The reversal of 68828662242 is 24226682886.

68828662242 is a `hidden beast` number, since 6 + 8 + 8 + 2 + 8 + 6 + 622 + 4 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (68828662223) and next prime (68828662261).

It can be written as a sum of positive squares in 2 ways, for example, as 66925172601 + 1903489641 = 258699^2 + 43629^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=185511.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1082148 + ... + 1143984.

Almost surely, 2^68828662242 is an apocalyptic number.

68828662242 is an abundant number, since it is smaller than the sum of its proper divisors (80302517631).

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

68828662242 is an frugal number, since it uses more digits than its factorization.

68828662242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123682 (or 61842 counting only the distinct ones).

The product of its digits is 7077888, while the sum is 54.

The spelling of 68828662242 in words is "sixty-eight billion, eight hundred twenty-eight million, six hundred sixty-two thousand, two hundred forty-two".