66700166156 has 48 divisors (see below), whose sum is σ = 127967992320. Its totient is φ = 30233079360.

The previous prime is 66700166081. The next prime is 66700166177. The reversal of 66700166156 is 65166100766.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1124285 + ... + 1182123.

It is an arithmetic number, because the mean of its divisors is an integer number (2665999840).

Almost surely, 2^66700166156 is an apocalyptic number.

It is an amenable number.

66700166156 is a deficient number, since it is larger than the sum of its proper divisors (61267826164).

66700166156 is a wasteful number, since it uses less digits than its factorization.

66700166156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58254 (or 58252 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 44.

The spelling of 66700166156 in words is "sixty-six billion, seven hundred million, one hundred sixty-six thousand, one hundred fifty-six".