66768895020707 has 16 divisors (see below), whose sum is σ = 72981970838784. Its totient is φ = 60579791460000.

The previous prime is 66768895020679. The next prime is 66768895020811. The reversal of 66768895020707 is 70702059886766.

66768895020707 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 66768895020707 - 2¹² = 66768895016611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66768895020407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9457457 + ... + 14932557.

It is an arithmetic number, because the mean of its divisors is an integer number (4561373177424).

Almost surely, 2^{66768895020707} is an apocalyptic number.

66768895020707 is a deficient number, since it is larger than the sum of its proper divisors (6213075818077).

66768895020707 is a wasteful number, since it uses less digits than its factorization.

66768895020707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5477290.

The product of its (nonzero) digits is 426746880, while the sum is 71.

The spelling of 66768895020707 in words is "sixty-six trillion, seven hundred sixty-eight billion, eight hundred ninety-five million, twenty thousand, seven hundred seven".