67731104139 has 4 divisors (see below), whose sum is σ = 90308138856. Its totient is φ = 45154069424.

The previous prime is 67731104071. The next prime is 67731104141. The reversal of 67731104139 is 93140113776.

67731104139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 67731104139 - 2⁷ = 67731104011 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 67731104139.

It is not an unprimeable number, because it can be changed into a prime (67731106139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11288517354 + ... + 11288517359.

It is an arithmetic number, because the mean of its divisors is an integer number (22577034714).

Almost surely, 2^67731104139 is an apocalyptic number.

67731104139 is a deficient number, since it is larger than the sum of its proper divisors (22577034717).

67731104139 is a wasteful number, since it uses less digits than its factorization.

67731104139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22577034716.

The product of its (nonzero) digits is 95256, while the sum is 42.

The spelling of 67731104139 in words is "sixty-seven billion, seven hundred thirty-one million, one hundred four thousand, one hundred thirty-nine".