68137759327488 has 144 divisors (see below), whose sum is σ = 183273917991360. Its totient is φ = 22472216543232.

The previous prime is 68137759327471. The next prime is 68137759327513. The reversal of 68137759327488 is 88472395773186.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30189120 + ... + 32367552.

Almost surely, 2^{68137759327488} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68137759327488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91636958995680).

68137759327488 is an abundant number, since it is smaller than the sum of its proper divisors (115136158663872).

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

68137759327488 is a wasteful number, since it uses less digits than its factorization.

68137759327488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2178884 (or 2178870 counting only the distinct ones).

The product of its digits is 3413975040, while the sum is 78.

The spelling of 68137759327488 in words is "sixty-eight trillion, one hundred thirty-seven billion, seven hundred fifty-nine million, three hundred twenty-seven thousand, four hundred eighty-eight".