67872818117 has 8 divisors (see below), whose sum is σ = 73095838200. Its totient is φ = 62650088640.

The previous prime is 67872818107. The next prime is 67872818129. The reversal of 67872818117 is 71181827876.

67872818117 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 34673791681 + 33199026436 = 186209^2 + 182206^2 .

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 67872818117 - 2¹² = 67872814021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67872818107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 806759 + ... + 886907.

It is an arithmetic number, because the mean of its divisors is an integer number (9136979775).

Almost surely, 2^67872818117 is an apocalyptic number.

It is an amenable number.

67872818117 is a deficient number, since it is larger than the sum of its proper divisors (5223020083).

67872818117 is a wasteful number, since it uses less digits than its factorization.

67872818117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145303.

The product of its digits is 2107392, while the sum is 56.

The spelling of 67872818117 in words is "sixty-seven billion, eight hundred seventy-two million, eight hundred eighteen thousand, one hundred seventeen".