660365402287 has 2 divisors, whose sum is σ = 660365402288. Its totient is φ = 660365402286.

The previous prime is 660365402251. The next prime is 660365402303. The reversal of 660365402287 is 782204563066.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-660365402287 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 660365402287.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (660365402087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330182701143 + 330182701144.

It is an arithmetic number, because the mean of its divisors is an integer number (330182701144).

Almost surely, 2^660365402287 is an apocalyptic number.

660365402287 is a deficient number, since it is larger than the sum of its proper divisors (1).

660365402287 is an equidigital number, since it uses as much as digits as its factorization.

660365402287 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2903040, while the sum is 49.

The spelling of 660365402287 in words is "six hundred sixty billion, three hundred sixty-five million, four hundred two thousand, two hundred eighty-seven".