130665267721 has 2 divisors, whose sum is σ = 130665267722. Its totient is φ = 130665267720.

The previous prime is 130665267703. The next prime is 130665267767. The reversal of 130665267721 is 127762566031.

It is an a-pointer prime, because the next prime (130665267767) can be obtained adding 130665267721 to its sum of digits (46).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 129068466121 + 1596801600 = 359261^2 + 39960^2 .

It is a cyclic number.

It is not a de Polignac number, because 130665267721 - 2¹⁷ = 130665136649 is a prime.

It is not a weakly prime, because it can be changed into another prime (130665267701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65332633860 + 65332633861.

It is an arithmetic number, because the mean of its divisors is an integer number (65332633861).

Almost surely, 2^130665267721 is an apocalyptic number.

It is an amenable number.

130665267721 is a deficient number, since it is larger than the sum of its proper divisors (1).

130665267721 is an equidigital number, since it uses as much as digits as its factorization.

130665267721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 635040, while the sum is 46.

The spelling of 130665267721 in words is "one hundred thirty billion, six hundred sixty-five million, two hundred sixty-seven thousand, seven hundred twenty-one".