1371371383649 has 2 divisors, whose sum is σ = 1371371383650. Its totient is φ = 1371371383648.

The previous prime is 1371371383633. The next prime is 1371371383703. The reversal of 1371371383649 is 9463831731731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1360360659025 + 11010724624 = 1166345^2 + 104932^2 .

It is a cyclic number.

It is not a de Polignac number, because 1371371383649 - 2⁴ = 1371371383633 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1371371383594 and 1371371383603.

It is not a weakly prime, because it can be changed into another prime (1371371383619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 685685691824 + 685685691825.

It is an arithmetic number, because the mean of its divisors is an integer number (685685691825).

Almost surely, 2^{1371371383649} is an apocalyptic number.

It is an amenable number.

1371371383649 is a deficient number, since it is larger than the sum of its proper divisors (1).

1371371383649 is an equidigital number, since it uses as much as digits as its factorization.

1371371383649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6858432, while the sum is 56.

The spelling of 1371371383649 in words is "one trillion, three hundred seventy-one billion, three hundred seventy-one million, three hundred eighty-three thousand, six hundred forty-nine".