68644276338 has 32 divisors (see below), whose sum is σ = 150000906240. Its totient is φ = 20769132560.

The previous prime is 68644276333. The next prime is 68644276373. The reversal of 68644276338 is 83367244686.

It is not an unprimeable number, because it can be changed into a prime (68644276333) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 761058 + ... + 846461.

It is an arithmetic number, because the mean of its divisors is an integer number (4687528320).

Almost surely, 2^68644276338 is an apocalyptic number.

68644276338 is an abundant number, since it is smaller than the sum of its proper divisors (81356629902).

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

68644276338 is a wasteful number, since it uses less digits than its factorization.

68644276338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1608182.

The product of its digits is 27869184, while the sum is 57.

The spelling of 68644276338 in words is "sixty-eight billion, six hundred forty-four million, two hundred seventy-six thousand, three hundred thirty-eight".