66733333994 has 4 divisors (see below), whose sum is σ = 100100000994. Its totient is φ = 33366666996.

The previous prime is 66733333987. The next prime is 66733334009. The reversal of 66733333994 is 49933333766.

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

It can be written as a sum of positive squares in only one way, i.e., 36417997225 + 30315336769 = 190835^2 + 174113^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 16683333497 + ... + 16683333500.

Almost surely, 2^66733333994 is an apocalyptic number.

66733333994 is a deficient number, since it is larger than the sum of its proper divisors (33366667000).

66733333994 is a wasteful number, since it uses less digits than its factorization.

66733333994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33366666999.

The product of its digits is 19840464, while the sum is 56.

The spelling of 66733333994 in words is "sixty-six billion, seven hundred thirty-three million, three hundred thirty-three thousand, nine hundred ninety-four".