67066666055 has 4 divisors (see below), whose sum is σ = 80479999272. Its totient is φ = 53653332840.

The previous prime is 67066666031. The next prime is 67066666067. The reversal of 67066666055 is 55066666076.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 67066666055 - 2²⁸ = 66798230599 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 67066665988 and 67066666006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6706666601 + ... + 6706666610.

It is an arithmetic number, because the mean of its divisors is an integer number (20119999818).

Almost surely, 2^67066666055 is an apocalyptic number.

67066666055 is a deficient number, since it is larger than the sum of its proper divisors (13413333217).

67066666055 is a wasteful number, since it uses less digits than its factorization.

67066666055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13413333216.

The product of its (nonzero) digits is 8164800, while the sum is 53.

The spelling of 67066666055 in words is "sixty-seven billion, sixty-six million, six hundred sixty-six thousand, fifty-five".