67616065166077 has 4 divisors (see below), whose sum is σ = 67616083306080. Its totient is φ = 67616047026076.

The previous prime is 67616065166033. The next prime is 67616065166099. The reversal of 67616065166077 is 77066156061676.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 67616065166077 - 2¹⁹ = 67616064641789 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 (67616065163077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1206073 + ... + 11691310.

It is an arithmetic number, because the mean of its divisors is an integer number (16904020826520).

Almost surely, 2^{67616065166077} is an apocalyptic number.

It is an amenable number.

67616065166077 is a deficient number, since it is larger than the sum of its proper divisors (18140003).

67616065166077 is a wasteful number, since it uses less digits than its factorization.

67616065166077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18140002.

The product of its (nonzero) digits is 80015040, while the sum is 64.

The spelling of 67616065166077 in words is "sixty-seven trillion, six hundred sixteen billion, sixty-five million, one hundred sixty-six thousand, seventy-seven".