135135556263 has 24 divisors (see below), whose sum is σ = 198610111440. Its totient is φ = 88516166400.

The previous prime is 135135556261. The next prime is 135135556277. The reversal of 135135556263 is 362655531531.

135135556263 is a `hidden beast` number, since 1 + 3 + 5 + 1 + 35 + 556 + 2 + 63 = 666.

It is not a de Polignac number, because 135135556263 - 2¹ = 135135556261 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135135556261) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 942495 + ... + 1076367.

It is an arithmetic number, because the mean of its divisors is an integer number (8275421310).

Almost surely, 2^135135556263 is an apocalyptic number.

135135556263 is a deficient number, since it is larger than the sum of its proper divisors (63474555177).

135135556263 is a wasteful number, since it uses less digits than its factorization.

135135556263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135839 (or 135836 counting only the distinct ones).

The product of its digits is 1215000, while the sum is 45.

The spelling of 135135556263 in words is "one hundred thirty-five billion, one hundred thirty-five million, five hundred fifty-six thousand, two hundred sixty-three".