68998933989986 has 64 divisors (see below), whose sum is σ = 139019919978240. Its totient is φ = 24804617160960.

The previous prime is 68998933989961. The next prime is 68998933989989.

68998933989986 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 68998933989986.

It is not an unprimeable number, because it can be changed into a prime (68998933989989) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2192321 + ... + 11950068.

It is an arithmetic number, because the mean of its divisors is an integer number (2172186249660).

Almost surely, 2^{68998933989986} is an apocalyptic number.

68998933989986 is an abundant number, since it is smaller than the sum of its proper divisors (70020985988254).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68998933989986 is a wasteful number, since it uses less digits than its factorization.

68998933989986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14144859.

The product of its digits is 705277476864, while the sum is 104.

The spelling of 68998933989986 in words is "sixty-eight trillion, nine hundred ninety-eight billion, nine hundred thirty-three million, nine hundred eighty-nine thousand, nine hundred eighty-six".