13553638487 has 2 divisors, whose sum is σ = 13553638488. Its totient is φ = 13553638486.

The previous prime is 13553638481. The next prime is 13553638573. The reversal of 13553638487 is 78483635531.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13553638487 - 2⁴ = 13553638471 is a prime.

It is a super-3 number, since 3×13553638487³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13553638481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6776819243 + 6776819244.

It is an arithmetic number, because the mean of its divisors is an integer number (6776819244).

Almost surely, 2^13553638487 is an apocalyptic number.

13553638487 is a deficient number, since it is larger than the sum of its proper divisors (1).

13553638487 is an equidigital number, since it uses as much as digits as its factorization.

13553638487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7257600, while the sum is 53.

The spelling of 13553638487 in words is "thirteen billion, five hundred fifty-three million, six hundred thirty-eight thousand, four hundred eighty-seven".