68888568658 has 32 divisors (see below), whose sum is σ = 127327584384. Its totient is φ = 27220758912.

The previous prime is 68888568587. The next prime is 68888568667. The reversal of 68888568658 is 85686588886.

It is a super-4 number, since 4×68888568658⁴ (a number of 44 digits) contains 4444 as substring. Note that it is a super-d number also for d = 3.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64860 + ... + 376807.

It is an arithmetic number, because the mean of its divisors is an integer number (3978987012).

Almost surely, 2^68888568658 is an apocalyptic number.

68888568658 is a deficient number, since it is larger than the sum of its proper divisors (58439015726).

68888568658 is a wasteful number, since it uses less digits than its factorization.

68888568658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442546.

The product of its digits is 1415577600, while the sum is 76.

The spelling of 68888568658 in words is "sixty-eight billion, eight hundred eighty-eight million, five hundred sixty-eight thousand, six hundred fifty-eight".