666060541766243 has 8 divisors (see below), whose sum is σ = 755048387427600. Its totient is φ = 582465898872288.

The previous prime is 666060541766231. The next prime is 666060541766299. The reversal of 666060541766243 is 342667145060666.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 666060541766243 - 2²² = 666060537571939 is a prime.

It is a super-2 number, since 2×666060541766243² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (666060541766443) 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, 1348300691588 + ... + 1348300692081.

It is an arithmetic number, because the mean of its divisors is an integer number (94381048428450).

Almost surely, 2^{666060541766243} is an apocalyptic number.

666060541766243 is a deficient number, since it is larger than the sum of its proper divisors (88987845661357).

666060541766243 is a wasteful number, since it uses less digits than its factorization.

666060541766243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2696601383701.

The product of its (nonzero) digits is 156764160, while the sum is 62.

The spelling of 666060541766243 in words is "six hundred sixty-six trillion, sixty billion, five hundred forty-one million, seven hundred sixty-six thousand, two hundred forty-three".