1471313316509 has 2 divisors, whose sum is σ = 1471313316510. Its totient is φ = 1471313316508.

The previous prime is 1471313316481. The next prime is 1471313316569. The reversal of 1471313316509 is 9056133131741.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1235454480100 + 235858836409 = 1111510^2 + 485653^2 .

It is a cyclic number.

It is not a de Polignac number, because 1471313316509 - 2⁴⁰ = 371801688733 is a prime.

It is a super-3 number, since 3×1471313316509³ (a number of 37 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1471313316509.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1471313316569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 735656658254 + 735656658255.

It is an arithmetic number, because the mean of its divisors is an integer number (735656658255).

Almost surely, 2^{1471313316509} is an apocalyptic number.

It is an amenable number.

1471313316509 is a deficient number, since it is larger than the sum of its proper divisors (1).

1471313316509 is an equidigital number, since it uses as much as digits as its factorization.

1471313316509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 204120, while the sum is 44.

The spelling of 1471313316509 in words is "one trillion, four hundred seventy-one billion, three hundred thirteen million, three hundred sixteen thousand, five hundred nine".