666346112036441 has 8 divisors (see below), whose sum is σ = 666394433707464. Its totient is φ = 666297791354880.

The previous prime is 666346112036383. The next prime is 666346112036467. The reversal of 666346112036441 is 144630211643666.

666346112036441 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 467188987848025 + 199157124188416 = 21614555^2 + 14112304^2 .

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 666346112036441 - 2⁶ = 666346112036377 is a prime.

It is a super-2 number, since 2×666346112036441² (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 (666346112036471) 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, 1808018201 + ... + 1808386713.

It is an arithmetic number, because the mean of its divisors is an integer number (83299304213433).

Almost surely, 2^{666346112036441} is an apocalyptic number.

It is an amenable number.

666346112036441 is a deficient number, since it is larger than the sum of its proper divisors (48321671023).

666346112036441 is a wasteful number, since it uses less digits than its factorization.

666346112036441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494731.

The product of its (nonzero) digits is 8957952, while the sum is 53.

The spelling of 666346112036441 in words is "six hundred sixty-six trillion, three hundred forty-six billion, one hundred twelve million, thirty-six thousand, four hundred forty-one".