2066319752767 has 4 divisors (see below), whose sum is σ = 2187867973536. Its totient is φ = 1944771532000.

The previous prime is 2066319752759. The next prime is 2066319752789. The reversal of 2066319752767 is 7672579136602.

It is a happy number.

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 2066319752767 - 2³ = 2066319752759 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 (2066319702767) 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, 60774110359 + ... + 60774110392.

It is an arithmetic number, because the mean of its divisors is an integer number (546966993384).

Almost surely, 2^{2066319752767} is an apocalyptic number.

2066319752767 is a deficient number, since it is larger than the sum of its proper divisors (121548220769).

2066319752767 is a wasteful number, since it uses less digits than its factorization.

2066319752767 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121548220768.

The product of its (nonzero) digits is 40007520, while the sum is 61.

The spelling of 2066319752767 in words is "two trillion, sixty-six billion, three hundred nineteen million, seven hundred fifty-two thousand, seven hundred sixty-seven".