68113728239240 has 32 divisors (see below), whose sum is σ = 153256323375000. Its totient is φ = 27245413991424.

The previous prime is 68113728239239. The next prime is 68113728239261. The reversal of 68113728239240 is 4293282731186.

It can be written as a sum of positive squares in 4 ways, for example, as 30346238422564 + 37767489816676 = 5508742^2 + 6145526^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13086386 + ... + 17535134.

Almost surely, 2^{68113728239240} is an apocalyptic number.

It is an amenable number.

68113728239240 is an abundant number, since it is smaller than the sum of its proper divisors (85142595135760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68113728239240 is a wasteful number, since it uses less digits than its factorization.

68113728239240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4831529 (or 4831525 counting only the distinct ones).

The product of its (nonzero) digits is 6967296, while the sum is 56.

The spelling of 68113728239240 in words is "sixty-eight trillion, one hundred thirteen billion, seven hundred twenty-eight million, two hundred thirty-nine thousand, two hundred forty".