130665621529 has 9 divisors (see below), whose sum is σ = 133522253461. Its totient is φ = 127868873980.

The previous prime is 130665621521. The next prime is 130665621553. The reversal of 130665621529 is 925126566031.

The square root of 130665621529 is 361477.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 130665621529 - 2³ = 130665621521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130665621521) 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 in 8 ways as a sum of consecutive naturals, for example, 16985574 + ... + 16993264.

Almost surely, 2^130665621529 is an apocalyptic number.

130665621529 is the 361477-th square number.

130665621529 is the 180739-th centered octagonal number.

It is an amenable number.

130665621529 is a deficient number, since it is larger than the sum of its proper divisors (2856631932).

130665621529 is an frugal number, since it uses more digits than its factorization.

130665621529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15476 (or 7738 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 46.

The spelling of 130665621529 in words is "one hundred thirty billion, six hundred sixty-five million, six hundred twenty-one thousand, five hundred twenty-nine".