666007230424561 has 8 divisors (see below), whose sum is σ = 666104390457800. Its totient is φ = 665910077460480.

The previous prime is 666007230424451. The next prime is 666007230424573. The reversal of 666007230424561 is 165424032700666.

It can be written as a sum of positive squares in 4 ways, for example, as 258355987783936 + 407651242640625 = 16073456^2 + 20190375^2 .

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 666007230424561 - 2¹⁹ = 666007229900273 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 666007230424499 and 666007230424508.

It is not an unprimeable number, because it can be changed into a prime (666007230404561) 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, 188158345 + ... + 191665273.

It is an arithmetic number, because the mean of its divisors is an integer number (83263048807225).

Almost surely, 2^{666007230424561} is an apocalyptic number.

It is an amenable number.

666007230424561 is a deficient number, since it is larger than the sum of its proper divisors (97160033239).

666007230424561 is a wasteful number, since it uses less digits than its factorization.

666007230424561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3534579.

The product of its (nonzero) digits is 8709120, while the sum is 52.

The spelling of 666007230424561 in words is "six hundred sixty-six trillion, seven billion, two hundred thirty million, four hundred twenty-four thousand, five hundred sixty-one".