1361324576509 has 2 divisors, whose sum is σ = 1361324576510. Its totient is φ = 1361324576508.

The previous prime is 1361324576429. The next prime is 1361324576519. The reversal of 1361324576509 is 9056754231631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1255128105625 + 106196470884 = 1120325^2 + 325878^2 .

It is a cyclic number.

It is not a de Polignac number, because 1361324576509 - 2²³ = 1361316187901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1361324576519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 680662288254 + 680662288255.

It is an arithmetic number, because the mean of its divisors is an integer number (680662288255).

Almost surely, 2^{1361324576509} is an apocalyptic number.

It is an amenable number.

1361324576509 is a deficient number, since it is larger than the sum of its proper divisors (1).

1361324576509 is an equidigital number, since it uses as much as digits as its factorization.

1361324576509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4082400, while the sum is 52.

The spelling of 1361324576509 in words is "one trillion, three hundred sixty-one billion, three hundred twenty-four million, five hundred seventy-six thousand, five hundred nine".