135603663451387 has 2 divisors, whose sum is σ = 135603663451388. Its totient is φ = 135603663451386.

The previous prime is 135603663451351. The next prime is 135603663451397. The reversal of 135603663451387 is 783154366306531.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 135603663451387 - 2³¹ = 135601515967739 is a prime.

It is not a weakly prime, because it can be changed into another prime (135603663451397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67801831725693 + 67801831725694.

It is an arithmetic number, because the mean of its divisors is an integer number (67801831725694).

Almost surely, 2^{135603663451387} is an apocalyptic number.

135603663451387 is a deficient number, since it is larger than the sum of its proper divisors (1).

135603663451387 is an equidigital number, since it uses as much as digits as its factorization.

135603663451387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 97977600, while the sum is 61.

The spelling of 135603663451387 in words is "one hundred thirty-five trillion, six hundred three billion, six hundred sixty-three million, four hundred fifty-one thousand, three hundred eighty-seven".