68211435073 has 4 divisors (see below), whose sum is σ = 69074871040. Its totient is φ = 67347999108.

The previous prime is 68211435053. The next prime is 68211435101. The reversal of 68211435073 is 37053411286.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68211435073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68211435053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 431717865 + ... + 431718022.

It is an arithmetic number, because the mean of its divisors is an integer number (17268717760).

Almost surely, 2^68211435073 is an apocalyptic number.

It is an amenable number.

68211435073 is a deficient number, since it is larger than the sum of its proper divisors (863435967).

68211435073 is an equidigital number, since it uses as much as digits as its factorization.

68211435073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 863435966.

The product of its (nonzero) digits is 120960, while the sum is 40.

The spelling of 68211435073 in words is "sixty-eight billion, two hundred eleven million, four hundred thirty-five thousand, seventy-three".