68988618698 has 32 divisors (see below), whose sum is σ = 105922365120. Its totient is φ = 33689295360.

The previous prime is 68988618649. The next prime is 68988618701. The reversal of 68988618698 is 89681688986.

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 in 15 ways as a sum of consecutive naturals, for example, 20524538 + ... + 20527898.

It is an arithmetic number, because the mean of its divisors is an integer number (3310073910).

Almost surely, 2^68988618698 is an apocalyptic number.

68988618698 is a deficient number, since it is larger than the sum of its proper divisors (36933746422).

68988618698 is a wasteful number, since it uses less digits than its factorization.

68988618698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4502.

The product of its digits is 573308928, while the sum is 77.

The spelling of 68988618698 in words is "sixty-eight billion, nine hundred eighty-eight million, six hundred eighteen thousand, six hundred ninety-eight".