68056874281109 has 4 divisors (see below), whose sum is σ = 77779284892704. Its totient is φ = 58334463669516.

The previous prime is 68056874281069. The next prime is 68056874281153. The reversal of 68056874281109 is 90118247865086.

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 not a de Polignac number, because 68056874281109 - 2⁸ = 68056874280853 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68056874281009) 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, 4861205305787 + ... + 4861205305800.

It is an arithmetic number, because the mean of its divisors is an integer number (19444821223176).

Almost surely, 2^{68056874281109} is an apocalyptic number.

It is an amenable number.

68056874281109 is a deficient number, since it is larger than the sum of its proper divisors (9722410611595).

68056874281109 is an equidigital number, since it uses as much as digits as its factorization.

68056874281109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9722410611594.

The product of its (nonzero) digits is 46448640, while the sum is 65.

The spelling of 68056874281109 in words is "sixty-eight trillion, fifty-six billion, eight hundred seventy-four million, two hundred eighty-one thousand, one hundred nine".