1365739021289 has 2 divisors, whose sum is σ = 1365739021290. Its totient is φ = 1365739021288.

The previous prime is 1365739021267. The next prime is 1365739021301. The reversal of 1365739021289 is 9821209375631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1356863874025 + 8875147264 = 1164845^2 + 94208^2 .

It is an emirp because it is prime and its reverse (9821209375631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1365739021289 - 2¹² = 1365739017193 is a prime.

It is not a weakly prime, because it can be changed into another prime (1365739021259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 682869510644 + 682869510645.

It is an arithmetic number, because the mean of its divisors is an integer number (682869510645).

Almost surely, 2^{1365739021289} is an apocalyptic number.

It is an amenable number.

1365739021289 is a deficient number, since it is larger than the sum of its proper divisors (1).

1365739021289 is an equidigital number, since it uses as much as digits as its factorization.

1365739021289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4898880, while the sum is 56.

The spelling of 1365739021289 in words is "one trillion, three hundred sixty-five billion, seven hundred thirty-nine million, twenty-one thousand, two hundred eighty-nine".