130309999961 has 2 divisors, whose sum is σ = 130309999962. Its totient is φ = 130309999960.

The previous prime is 130309999943. The next prime is 130310000027. The reversal of 130309999961 is 169999903031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108043690000 + 22266309961 = 328700^2 + 149219^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-130309999961 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 130309999961.

It is not a weakly prime, because it can be changed into another prime (130309959961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65154999980 + 65154999981.

It is an arithmetic number, because the mean of its divisors is an integer number (65154999981).

Almost surely, 2^130309999961 is an apocalyptic number.

It is an amenable number.

130309999961 is a deficient number, since it is larger than the sum of its proper divisors (1).

130309999961 is an equidigital number, since it uses as much as digits as its factorization.

130309999961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3188646, while the sum is 59.

The spelling of 130309999961 in words is "one hundred thirty billion, three hundred nine million, nine hundred ninety-nine thousand, nine hundred sixty-one".