67838860805 has 8 divisors (see below), whose sum is σ = 81457489944. Its totient is φ = 54237184000.

The previous prime is 67838860781. The next prime is 67838860811. The reversal of 67838860805 is 50806883876.

It can be written as a sum of positive squares in 4 ways, for example, as 29282396641 + 38556464164 = 171121^2 + 196358^2 .

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

It is not a de Polignac number, because 67838860805 - 2²⁶ = 67771751941 is a prime.

It is a super-2 number, since 2×67838860805² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4229276 + ... + 4245285.

It is an arithmetic number, because the mean of its divisors is an integer number (10182186243).

Almost surely, 2^67838860805 is an apocalyptic number.

It is an amenable number.

67838860805 is a deficient number, since it is larger than the sum of its proper divisors (13618629139).

67838860805 is a wasteful number, since it uses less digits than its factorization.

67838860805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8476167.

The product of its (nonzero) digits is 15482880, while the sum is 59.

The spelling of 67838860805 in words is "sixty-seven billion, eight hundred thirty-eight million, eight hundred sixty thousand, eight hundred five".