68151693968 has 40 divisors (see below), whose sum is σ = 133281276000. Its totient is φ = 33756839424.

The previous prime is 68151693877. The next prime is 68151693983. The reversal of 68151693968 is 86939615186.

It is a self number, because there is not a number n which added to its sum of digits gives 68151693968.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3930983 + ... + 3948281.

It is an arithmetic number, because the mean of its divisors is an integer number (3332031900).

Almost surely, 2^68151693968 is an apocalyptic number.

It is an amenable number.

68151693968 is a deficient number, since it is larger than the sum of its proper divisors (65129582032).

68151693968 is a wasteful number, since it uses less digits than its factorization.

68151693968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19599 (or 19593 counting only the distinct ones).

The product of its digits is 16796160, while the sum is 62.

The spelling of 68151693968 in words is "sixty-eight billion, one hundred fifty-one million, six hundred ninety-three thousand, nine hundred sixty-eight".