68145507328 has 22 divisors (see below), whose sum is σ = 136224468356. Its totient is φ = 34072753152.

The previous prime is 68145507319. The next prime is 68145507329. The reversal of 68145507328 is 82370554186.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (68145507329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33273150 + ... + 33275197.

Almost surely, 2^68145507328 is an apocalyptic number.

It is an amenable number.

68145507328 is a deficient number, since it is larger than the sum of its proper divisors (68078961028).

68145507328 is an equidigital number, since it uses as much as digits as its factorization.

68145507328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66548367 (or 66548349 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 49.

The spelling of 68145507328 in words is "sixty-eight billion, one hundred forty-five million, five hundred seven thousand, three hundred twenty-eight".