60666468661 has 2 divisors, whose sum is σ = 60666468662. Its totient is φ = 60666468660.

The previous prime is 60666468637. The next prime is 60666468679. The reversal of 60666468661 is 16686466606.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52690907025 + 7975561636 = 229545^2 + 89306^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-60666468661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (60666465661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30333234330 + 30333234331.

It is an arithmetic number, because the mean of its divisors is an integer number (30333234331).

Almost surely, 2^60666468661 is an apocalyptic number.

It is an amenable number.

60666468661 is a deficient number, since it is larger than the sum of its proper divisors (1).

60666468661 is an equidigital number, since it uses as much as digits as its factorization.

60666468661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8957952, while the sum is 55.

The spelling of 60666468661 in words is "sixty billion, six hundred sixty-six million, four hundred sixty-eight thousand, six hundred sixty-one".