66746109076018 has 16 divisors (see below), whose sum is σ = 106089883522560. Its totient is φ = 31385827803456.

The previous prime is 66746109076007. The next prime is 66746109076019. The reversal of 66746109076018 is 81067090164766.

It is not an unprimeable number, because it can be changed into a prime (66746109076019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 753263778 + ... + 753352381.

It is an arithmetic number, because the mean of its divisors is an integer number (6630617720160).

Almost surely, 2^{66746109076018} is an apocalyptic number.

66746109076018 is a deficient number, since it is larger than the sum of its proper divisors (39343774446542).

66746109076018 is a wasteful number, since it uses less digits than its factorization.

66746109076018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1506617481.

The product of its (nonzero) digits is 18289152, while the sum is 61.

The spelling of 66746109076018 in words is "sixty-six trillion, seven hundred forty-six billion, one hundred nine million, seventy-six thousand, eighteen".