660231614989 has 2 divisors, whose sum is σ = 660231614990. Its totient is φ = 660231614988.

The previous prime is 660231614969. The next prime is 660231615013. The reversal of 660231614989 is 989416132066.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 566391708100 + 93839906889 = 752590^2 + 306333^2 .

It is a cyclic number.

It is not a de Polignac number, because 660231614989 - 2⁹ = 660231614477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (660231614909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330115807494 + 330115807495.

It is an arithmetic number, because the mean of its divisors is an integer number (330115807495).

Almost surely, 2^660231614989 is an apocalyptic number.

It is an amenable number.

660231614989 is a deficient number, since it is larger than the sum of its proper divisors (1).

660231614989 is an equidigital number, since it uses as much as digits as its factorization.

660231614989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3359232, while the sum is 55.

The spelling of 660231614989 in words is "six hundred sixty billion, two hundred thirty-one million, six hundred fourteen thousand, nine hundred eighty-nine".