135555264656503 has 2 divisors, whose sum is σ = 135555264656504. Its totient is φ = 135555264656502.

The previous prime is 135555264656431. The next prime is 135555264656543. The reversal of 135555264656503 is 305656462555531.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 135555264656503 - 2⁹ = 135555264655991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135555264656543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67777632328251 + 67777632328252.

It is an arithmetic number, because the mean of its divisors is an integer number (67777632328252).

Almost surely, 2^{135555264656503} is an apocalyptic number.

135555264656503 is a deficient number, since it is larger than the sum of its proper divisors (1).

135555264656503 is an equidigital number, since it uses as much as digits as its factorization.

135555264656503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 243000000, while the sum is 61.

The spelling of 135555264656503 in words is "one hundred thirty-five trillion, five hundred fifty-five billion, two hundred sixty-four million, six hundred fifty-six thousand, five hundred three".