68636883898 has 16 divisors (see below), whose sum is σ = 114156131040. Its totient is φ = 30687130800.

The previous prime is 68636883841. The next prime is 68636883919. The reversal of 68636883898 is 89838863686.

It is a super-2 number, since 2×68636883898² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 68636883898.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25571268 + ... + 25573951.

It is an arithmetic number, because the mean of its divisors is an integer number (7134758190).

Almost surely, 2^68636883898 is an apocalyptic number.

68636883898 is a deficient number, since it is larger than the sum of its proper divisors (45519247142).

68636883898 is a wasteful number, since it uses less digits than its factorization.

68636883898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51145293.

The product of its digits is 573308928, while the sum is 73.

The spelling of 68636883898 in words is "sixty-eight billion, six hundred thirty-six million, eight hundred eighty-three thousand, eight hundred ninety-eight".