68424311873 has 4 divisors (see below), whose sum is σ = 68468372868. Its totient is φ = 68380250880.

The previous prime is 68424311831. The next prime is 68424311897. The reversal of 68424311873 is 37811342486.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26845839409 + 41578472464 = 163847^2 + 203908^2 .

It is a cyclic number.

It is not a de Polignac number, because 68424311873 - 2⁸ = 68424311617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68424311573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22028168 + ... + 22031273.

It is an arithmetic number, because the mean of its divisors is an integer number (17117093217).

Almost surely, 2^68424311873 is an apocalyptic number.

It is an amenable number.

68424311873 is a deficient number, since it is larger than the sum of its proper divisors (44060995).

68424311873 is a wasteful number, since it uses less digits than its factorization.

68424311873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44060994.

The product of its digits is 774144, while the sum is 47.

The spelling of 68424311873 in words is "sixty-eight billion, four hundred twenty-four million, three hundred eleven thousand, eight hundred seventy-three".