1347641509523 has 2 divisors, whose sum is σ = 1347641509524. Its totient is φ = 1347641509522.

The previous prime is 1347641509483. The next prime is 1347641509547. The reversal of 1347641509523 is 3259051467431.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1347641509523 - 2¹⁴ = 1347641493139 is a prime.

It is a super-4 number, since 4×1347641509523⁴ (a number of 50 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (1347641509573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 673820754761 + 673820754762.

It is an arithmetic number, because the mean of its divisors is an integer number (673820754762).

Almost surely, 2^{1347641509523} is an apocalyptic number.

1347641509523 is a deficient number, since it is larger than the sum of its proper divisors (1).

1347641509523 is an equidigital number, since it uses as much as digits as its factorization.

1347641509523 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2721600, while the sum is 50.

The spelling of 1347641509523 in words is "one trillion, three hundred forty-seven billion, six hundred forty-one million, five hundred nine thousand, five hundred twenty-three".