666160465710551 has 4 divisors (see below), whose sum is σ = 761326246526352. Its totient is φ = 570994684894752.

The previous prime is 666160465710539. The next prime is 666160465710583. The reversal of 666160465710551 is 155017564061666.

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

It is a cyclic number.

It is not a de Polignac number, because 666160465710551 - 2²² = 666160461516247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666160465710251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47582890407890 + ... + 47582890407903.

It is an arithmetic number, because the mean of its divisors is an integer number (190331561631588).

Almost surely, 2^{666160465710551} is an apocalyptic number.

666160465710551 is a deficient number, since it is larger than the sum of its proper divisors (95165780815801).

666160465710551 is an equidigital number, since it uses as much as digits as its factorization.

666160465710551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95165780815800.

The product of its (nonzero) digits is 27216000, while the sum is 59.

The spelling of 666160465710551 in words is "six hundred sixty-six trillion, one hundred sixty billion, four hundred sixty-five million, seven hundred ten thousand, five hundred fifty-one".