166366451653412 has 12 divisors (see below), whose sum is σ = 291901450423296. Its totient is φ = 82966037246760.

The previous prime is 166366451653403. The next prime is 166366451653427. The reversal of 166366451653412 is 214356154663661.

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 in 3 ways as a sum of consecutive naturals, for example, 54297143264 + ... + 54297146327.

It is an arithmetic number, because the mean of its divisors is an integer number (24325120868608).

Almost surely, 2^{166366451653412} is an apocalyptic number.

It is an amenable number.

166366451653412 is a deficient number, since it is larger than the sum of its proper divisors (125534998769884).

166366451653412 is a wasteful number, since it uses less digits than its factorization.

166366451653412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108594289978 (or 108594289976 counting only the distinct ones).

The product of its digits is 55987200, while the sum is 59.

The spelling of 166366451653412 in words is "one hundred sixty-six trillion, three hundred sixty-six billion, four hundred fifty-one million, six hundred fifty-three thousand, four hundred twelve".