1563959142497 has 2 divisors, whose sum is σ = 1563959142498. Its totient is φ = 1563959142496.

The previous prime is 1563959142479. The next prime is 1563959142503. The reversal of 1563959142497 is 7942419593651.

Together with previous prime (1563959142479) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1483448484961 + 80510657536 = 1217969^2 + 283744^2 .

It is a cyclic number.

It is not a de Polignac number, because 1563959142497 - 2¹⁴ = 1563959126113 is a prime.

It is not a weakly prime, because it can be changed into another prime (1563959142457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 781979571248 + 781979571249.

It is an arithmetic number, because the mean of its divisors is an integer number (781979571249).

Almost surely, 2^{1563959142497} is an apocalyptic number.

It is an amenable number.

1563959142497 is a deficient number, since it is larger than the sum of its proper divisors (1).

1563959142497 is an equidigital number, since it uses as much as digits as its factorization.

1563959142497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 73483200, while the sum is 65.

The spelling of 1563959142497 in words is "one trillion, five hundred sixty-three billion, nine hundred fifty-nine million, one hundred forty-two thousand, four hundred ninety-seven".