130623347681 has 2 divisors, whose sum is σ = 130623347682. Its totient is φ = 130623347680.

The previous prime is 130623347629. The next prime is 130623347689. The reversal of 130623347681 is 186743326031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90926371600 + 39696976081 = 301540^2 + 199241^2 .

It is an emirp because it is prime and its reverse (186743326031) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-130623347681 is a prime.

It is a super-2 number, since 2×130623347681² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (130623347689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65311673840 + 65311673841.

It is an arithmetic number, because the mean of its divisors is an integer number (65311673841).

Almost surely, 2^130623347681 is an apocalyptic number.

It is an amenable number.

130623347681 is a deficient number, since it is larger than the sum of its proper divisors (1).

130623347681 is an equidigital number, since it uses as much as digits as its factorization.

130623347681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 435456, while the sum is 44.

The spelling of 130623347681 in words is "one hundred thirty billion, six hundred twenty-three million, three hundred forty-seven thousand, six hundred eighty-one".