1371057472409 has 2 divisors, whose sum is σ = 1371057472410. Its totient is φ = 1371057472408.

The previous prime is 1371057472391. The next prime is 1371057472417. The reversal of 1371057472409 is 9042747501731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1291468599184 + 79588873225 = 1136428^2 + 282115^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1371057472409 is a prime.

It is not a weakly prime, because it can be changed into another prime (1371057472459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 685528736204 + 685528736205.

It is an arithmetic number, because the mean of its divisors is an integer number (685528736205).

Almost surely, 2^{1371057472409} is an apocalyptic number.

It is an amenable number.

1371057472409 is a deficient number, since it is larger than the sum of its proper divisors (1).

1371057472409 is an equidigital number, since it uses as much as digits as its factorization.

1371057472409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1481760, while the sum is 50.

The spelling of 1371057472409 in words is "one trillion, three hundred seventy-one billion, fifty-seven million, four hundred seventy-two thousand, four hundred nine".