66763836766 has 12 divisors (see below), whose sum is σ = 110077565976. Its totient is φ = 30347198420.

The previous prime is 66763836761. The next prime is 66763836773.

66763836766 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 66763836698 and 66763836707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66763836761) 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 5 ways as a sum of consecutive naturals, for example, 137941570 + ... + 137942053.

It is an arithmetic number, because the mean of its divisors is an integer number (9173130498).

Almost surely, 2^66763836766 is an apocalyptic number.

66763836766 is a deficient number, since it is larger than the sum of its proper divisors (43313729210).

66763836766 is a wasteful number, since it uses less digits than its factorization.

66763836766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275883647 (or 275883636 counting only the distinct ones).

The product of its digits is 164602368, while the sum is 64.

The spelling of 66763836766 in words is "sixty-six billion, seven hundred sixty-three million, eight hundred thirty-six thousand, seven hundred sixty-six".