68321025536 has 20 divisors (see below), whose sum is σ = 136508612592. Its totient is φ = 34160512512.

The previous prime is 68321025517. The next prime is 68321025551. The reversal of 68321025536 is 63552012386.

It is a junction number, because it is equal to n+sod(n) for n = 68321025493 and 68321025502.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66719240 + ... + 66720263.

Almost surely, 2^68321025536 is an apocalyptic number.

It is an amenable number.

68321025536 is a deficient number, since it is larger than the sum of its proper divisors (68187587056).

68321025536 is an equidigital number, since it uses as much as digits as its factorization.

68321025536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133439521 (or 133439505 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 41.

The spelling of 68321025536 in words is "sixty-eight billion, three hundred twenty-one million, twenty-five thousand, five hundred thirty-six".