1230810377509 has 2 divisors, whose sum is σ = 1230810377510. Its totient is φ = 1230810377508.

The previous prime is 1230810377471. The next prime is 1230810377561. The reversal of 1230810377509 is 9057730180321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 752434804900 + 478375572609 = 867430^2 + 691647^2 .

It is a cyclic number.

It is not a de Polignac number, because 1230810377509 - 2²³ = 1230801988901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1230810377609) 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, 615405188754 + 615405188755.

It is an arithmetic number, because the mean of its divisors is an integer number (615405188755).

Almost surely, 2^{1230810377509} is an apocalyptic number.

It is an amenable number.

1230810377509 is a deficient number, since it is larger than the sum of its proper divisors (1).

1230810377509 is an equidigital number, since it uses as much as digits as its factorization.

1230810377509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 317520, while the sum is 46.

The spelling of 1230810377509 in words is "one trillion, two hundred thirty billion, eight hundred ten million, three hundred seventy-seven thousand, five hundred nine".