68937438135037 has 4 divisors (see below), whose sum is σ = 68940020765340. Its totient is φ = 68934855504736.

The previous prime is 68937438135023. The next prime is 68937438135067. The reversal of 68937438135037 is 73053183473986.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 183805983076 + 68753632151961 = 428726^2 + 8291781^2 .

It is a cyclic number.

It is not a de Polignac number, because 68937438135037 - 2¹⁹ = 68937437610749 is a prime.

It is a Smith number, since the sum of its digits (67) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68937438135067) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1291275112 + ... + 1291328497.

It is an arithmetic number, because the mean of its divisors is an integer number (17235005191335).

Almost surely, 2^{68937438135037} is an apocalyptic number.

It is an amenable number.

68937438135037 is a deficient number, since it is larger than the sum of its proper divisors (2582630303).

68937438135037 is a wasteful number, since it uses less digits than its factorization.

68937438135037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2582630302.

The product of its (nonzero) digits is 274337280, while the sum is 67.

The spelling of 68937438135037 in words is "sixty-eight trillion, nine hundred thirty-seven billion, four hundred thirty-eight million, one hundred thirty-five thousand, thirty-seven".