13663559479 has 2 divisors, whose sum is σ = 13663559480. Its totient is φ = 13663559478.

The previous prime is 13663559461. The next prime is 13663559489. The reversal of 13663559479 is 97495536631.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13663559479 - 2⁹ = 13663558967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13663559489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6831779739 + 6831779740.

It is an arithmetic number, because the mean of its divisors is an integer number (6831779740).

Almost surely, 2^13663559479 is an apocalyptic number.

13663559479 is a deficient number, since it is larger than the sum of its proper divisors (1).

13663559479 is an equidigital number, since it uses as much as digits as its factorization.

13663559479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18370800, while the sum is 58.

The spelling of 13663559479 in words is "thirteen billion, six hundred sixty-three million, five hundred fifty-nine thousand, four hundred seventy-nine".