13553951563 has 2 divisors, whose sum is σ = 13553951564. Its totient is φ = 13553951562.

The previous prime is 13553951483. The next prime is 13553951597. The reversal of 13553951563 is 36515935531.

It is a strong prime.

It is an emirp because it is prime and its reverse (36515935531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13553951563 - 2¹⁷ = 13553820491 is a prime.

It is not a weakly prime, because it can be changed into another prime (13553901563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6776975781 + 6776975782.

It is an arithmetic number, because the mean of its divisors is an integer number (6776975782).

Almost surely, 2^13553951563 is an apocalyptic number.

13553951563 is a deficient number, since it is larger than the sum of its proper divisors (1).

13553951563 is an equidigital number, since it uses as much as digits as its factorization.

13553951563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 911250, while the sum is 46.

The spelling of 13553951563 in words is "thirteen billion, five hundred fifty-three million, nine hundred fifty-one thousand, five hundred sixty-three".