68542823428 has 12 divisors (see below), whose sum is σ = 120478356432. Its totient is φ = 34120435880.

The previous prime is 68542823381. The next prime is 68542823471. The reversal of 68542823428 is 82432824586.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37742938 + ... + 37744753.

It is an arithmetic number, because the mean of its divisors is an integer number (10039863036).

Almost surely, 2^68542823428 is an apocalyptic number.

It is an amenable number.

68542823428 is a deficient number, since it is larger than the sum of its proper divisors (51935533004).

68542823428 is a wasteful number, since it uses less digits than its factorization.

68542823428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75487922 (or 75487920 counting only the distinct ones).

The product of its digits is 5898240, while the sum is 52.

The spelling of 68542823428 in words is "sixty-eight billion, five hundred forty-two million, eight hundred twenty-three thousand, four hundred twenty-eight".