68218500195 has 48 divisors (see below), whose sum is σ = 119882853792. Its totient is φ = 35882188800.

The previous prime is 68218500169. The next prime is 68218500241. The reversal of 68218500195 is 59100581286.

It is a happy number.

It is not a de Polignac number, because 68218500195 - 2¹⁷ = 68218369123 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 68218500195.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1138864 + ... + 1197266.

It is an arithmetic number, because the mean of its divisors is an integer number (2497559454).

Almost surely, 2^68218500195 is an apocalyptic number.

68218500195 is a deficient number, since it is larger than the sum of its proper divisors (51664353597).

68218500195 is a wasteful number, since it uses less digits than its factorization.

68218500195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58772 (or 58769 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 45.

The spelling of 68218500195 in words is "sixty-eight billion, two hundred eighteen million, five hundred thousand, one hundred ninety-five".