68876728273 has 16 divisors (see below), whose sum is σ = 70561711440. Its totient is φ = 67211827200.

The previous prime is 68876728243. The next prime is 68876728321. The reversal of 68876728273 is 37282767886.

It can be written as a sum of positive squares in 8 ways, for example, as 1786921984 + 67089806289 = 42272^2 + 259017^2 .

It is a cyclic number.

It is not a de Polignac number, because 68876728273 - 2¹⁷ = 68876597201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68876728243) 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, 3945861 + ... + 3963277.

It is an arithmetic number, because the mean of its divisors is an integer number (4410106965).

Almost surely, 2^68876728273 is an apocalyptic number.

It is an amenable number.

68876728273 is a deficient number, since it is larger than the sum of its proper divisors (1684983167).

68876728273 is a wasteful number, since it uses less digits than its factorization.

68876728273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17988.

The product of its digits is 75866112, while the sum is 64.

The spelling of 68876728273 in words is "sixty-eight billion, eight hundred seventy-six million, seven hundred twenty-eight thousand, two hundred seventy-three".