68816740553438 has 16 divisors (see below), whose sum is σ = 105410164783536. Its totient is φ = 33682949951040.

The previous prime is 68816740553411. The next prime is 68816740553459. The reversal of 68816740553438 is 83435504761886.

68816740553438 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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, 732700823 + ... + 732794738.

It is an arithmetic number, because the mean of its divisors is an integer number (6588135298971).

Almost surely, 2^{68816740553438} is an apocalyptic number.

68816740553438 is a deficient number, since it is larger than the sum of its proper divisors (36593424230098).

68816740553438 is a wasteful number, since it uses less digits than its factorization.

68816740553438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1465496059.

The product of its (nonzero) digits is 464486400, while the sum is 68.

The spelling of 68816740553438 in words is "sixty-eight trillion, eight hundred sixteen billion, seven hundred forty million, five hundred fifty-three thousand, four hundred thirty-eight".