67040670673667 has 4 divisors (see below), whose sum is σ = 67112835013320. Its totient is φ = 66968506334016.

The previous prime is 67040670673643. The next prime is 67040670673699. The reversal of 67040670673667 is 76637607604076.

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 67040670673667 - 2⁸ = 67040670673411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67040670673967) 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, 36082168433 + ... + 36082170290.

It is an arithmetic number, because the mean of its divisors is an integer number (16778208753330).

Almost surely, 2^{67040670673667} is an apocalyptic number.

67040670673667 is a deficient number, since it is larger than the sum of its proper divisors (72164339653).

67040670673667 is an equidigital number, since it uses as much as digits as its factorization.

67040670673667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72164339652.

The product of its (nonzero) digits is 224042112, while the sum is 65.

The spelling of 67040670673667 in words is "sixty-seven trillion, forty billion, six hundred seventy million, six hundred seventy-three thousand, six hundred sixty-seven".