68431178869 has 8 divisors (see below), whose sum is σ = 68590476000. Its totient is φ = 68271971376.

The previous prime is 68431178861. The next prime is 68431178897. The reversal of 68431178869 is 96887113486.

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 68431178869 - 2³ = 68431178861 is a prime.

It is a super-2 number, since 2×68431178869² (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 (68431178861) 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, 1649667 + ... + 1690639.

It is an arithmetic number, because the mean of its divisors is an integer number (8573809500).

Almost surely, 2^68431178869 is an apocalyptic number.

It is an amenable number.

68431178869 is a deficient number, since it is larger than the sum of its proper divisors (159297131).

68431178869 is a wasteful number, since it uses less digits than its factorization.

68431178869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44819.

The product of its digits is 13934592, while the sum is 61.

The spelling of 68431178869 in words is "sixty-eight billion, four hundred thirty-one million, one hundred seventy-eight thousand, eight hundred sixty-nine".