1517421318463 has 2 divisors, whose sum is σ = 1517421318464. Its totient is φ = 1517421318462.

The previous prime is 1517421318451. The next prime is 1517421318473. The reversal of 1517421318463 is 3648131247151.

It is a strong prime.

It is an emirp because it is prime and its reverse (3648131247151) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1517421318463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1517421318473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 758710659231 + 758710659232.

It is an arithmetic number, because the mean of its divisors is an integer number (758710659232).

Almost surely, 2^{1517421318463} is an apocalyptic number.

1517421318463 is a deficient number, since it is larger than the sum of its proper divisors (1).

1517421318463 is an equidigital number, since it uses as much as digits as its factorization.

1517421318463 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 483840, while the sum is 46.

The spelling of 1517421318463 in words is "one trillion, five hundred seventeen billion, four hundred twenty-one million, three hundred eighteen thousand, four hundred sixty-three".