68438236427 has 16 divisors (see below), whose sum is σ = 75709836000. Its totient is φ = 61347728640.

The previous prime is 68438236397. The next prime is 68438236453. The reversal of 68438236427 is 72463283486.

It is not a de Polignac number, because 68438236427 - 2⁸ = 68438236171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68438236487) 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 15 ways as a sum of consecutive naturals, for example, 72149 + ... + 376937.

It is an arithmetic number, because the mean of its divisors is an integer number (4731864750).

Almost surely, 2^68438236427 is an apocalyptic number.

68438236427 is a deficient number, since it is larger than the sum of its proper divisors (7271599573).

68438236427 is a wasteful number, since it uses less digits than its factorization.

68438236427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305086.

The product of its digits is 9289728, while the sum is 53.

The spelling of 68438236427 in words is "sixty-eight billion, four hundred thirty-eight million, two hundred thirty-six thousand, four hundred twenty-seven".