68593223581 has 8 divisors (see below), whose sum is σ = 69265609920. Its totient is φ = 67920961152.

The previous prime is 68593223563. The next prime is 68593223627. The reversal of 68593223581 is 18532239586.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68593223581 - 2⁵ = 68593223549 is a prime.

It is a super-2 number, since 2×68593223581² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68593223681) 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 7 ways as a sum of consecutive naturals, for example, 1405965 + ... + 1453933.

It is an arithmetic number, because the mean of its divisors is an integer number (8658201240).

Almost surely, 2^68593223581 is an apocalyptic number.

It is an amenable number.

68593223581 is a deficient number, since it is larger than the sum of its proper divisors (672386339).

68593223581 is a wasteful number, since it uses less digits than its factorization.

68593223581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61955.

The product of its digits is 3110400, while the sum is 52.

The spelling of 68593223581 in words is "sixty-eight billion, five hundred ninety-three million, two hundred twenty-three thousand, five hundred eighty-one".