130440105209 has 2 divisors, whose sum is σ = 130440105210. Its totient is φ = 130440105208.

The previous prime is 130440105181. The next prime is 130440105253. The reversal of 130440105209 is 902501044031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 127643281984 + 2796823225 = 357272^2 + 52885^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-130440105209 is a prime.

It is not a weakly prime, because it can be changed into another prime (130440105269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65220052604 + 65220052605.

It is an arithmetic number, because the mean of its divisors is an integer number (65220052605).

Almost surely, 2^130440105209 is an apocalyptic number.

It is an amenable number.

130440105209 is a deficient number, since it is larger than the sum of its proper divisors (1).

130440105209 is an equidigital number, since it uses as much as digits as its factorization.

130440105209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 29.

The spelling of 130440105209 in words is "one hundred thirty billion, four hundred forty million, one hundred five thousand, two hundred nine".