68238793438 has 16 divisors (see below), whose sum is σ = 102585377664. Its totient is φ = 34043728600.

The previous prime is 68238793433. The next prime is 68238793439. The reversal of 68238793438 is 83439783286.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68238793433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2436213 + ... + 2464063.

It is an arithmetic number, because the mean of its divisors is an integer number (6411586104).

Almost surely, 2^68238793438 is an apocalyptic number.

68238793438 is a deficient number, since it is larger than the sum of its proper divisors (34346584226).

68238793438 is a wasteful number, since it uses less digits than its factorization.

68238793438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30527.

The product of its digits is 41803776, while the sum is 61.

The spelling of 68238793438 in words is "sixty-eight billion, two hundred thirty-eight million, seven hundred ninety-three thousand, four hundred thirty-eight".