660605110541 has 2 divisors, whose sum is σ = 660605110542. Its totient is φ = 660605110540.

The previous prime is 660605110531. The next prime is 660605110609. The reversal of 660605110541 is 145011506066.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 530608808041 + 129996302500 = 728429^2 + 360550^2 .

It is a cyclic number.

It is not a de Polignac number, because 660605110541 - 2¹⁰ = 660605109517 is a prime.

It is a super-2 number, since 2×660605110541² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (660605110531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330302555270 + 330302555271.

It is an arithmetic number, because the mean of its divisors is an integer number (330302555271).

Almost surely, 2^660605110541 is an apocalyptic number.

It is an amenable number.

660605110541 is a deficient number, since it is larger than the sum of its proper divisors (1).

660605110541 is an equidigital number, since it uses as much as digits as its factorization.

660605110541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21600, while the sum is 35.

The spelling of 660605110541 in words is "six hundred sixty billion, six hundred five million, one hundred ten thousand, five hundred forty-one".