67066409279 has 4 divisors (see below), whose sum is σ = 67067287776. Its totient is φ = 67065530784.

The previous prime is 67066409273. The next prime is 67066409281. The reversal of 67066409279 is 97290466076.

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 67066409279 - 2²⁴ = 67049632063 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 (67066409273) 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, 312554 + ... + 481479.

It is an arithmetic number, because the mean of its divisors is an integer number (16766821944).

Almost surely, 2^67066409279 is an apocalyptic number.

67066409279 is a deficient number, since it is larger than the sum of its proper divisors (878497).

67066409279 is an equidigital number, since it uses as much as digits as its factorization.

67066409279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 878496.

The product of its (nonzero) digits is 6858432, while the sum is 56.

The spelling of 67066409279 in words is "sixty-seven billion, sixty-six million, four hundred nine thousand, two hundred seventy-nine".