68311809059 has 4 divisors (see below), whose sum is σ = 73566563616. Its totient is φ = 63057054504.

The previous prime is 68311809037. The next prime is 68311809061. The reversal of 68311809059 is 95090811386.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 68311809059 - 2¹⁶ = 68311743523 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68311808998 and 68311809016.

It is not an unprimeable number, because it can be changed into a prime (68311809079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2627377259 + ... + 2627377284.

It is an arithmetic number, because the mean of its divisors is an integer number (18391640904).

Almost surely, 2^68311809059 is an apocalyptic number.

68311809059 is a deficient number, since it is larger than the sum of its proper divisors (5254754557).

68311809059 is a wasteful number, since it uses less digits than its factorization.

68311809059 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5254754556.

The product of its (nonzero) digits is 466560, while the sum is 50.

The spelling of 68311809059 in words is "sixty-eight billion, three hundred eleven million, eight hundred nine thousand, fifty-nine".