135551555533 has 4 divisors (see below), whose sum is σ = 136526746720. Its totient is φ = 134576364348.

The previous prime is 135551555497. The next prime is 135551555563. The reversal of 135551555533 is 335555155531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 335555155531 = 11497 ⋅29186323.

It is a cyclic number.

It is not a de Polignac number, because 135551555533 - 2¹⁷ = 135551424461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135551555563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 487595385 + ... + 487595662.

It is an arithmetic number, because the mean of its divisors is an integer number (34131686680).

Almost surely, 2^135551555533 is an apocalyptic number.

It is an amenable number.

135551555533 is a deficient number, since it is larger than the sum of its proper divisors (975191187).

135551555533 is an equidigital number, since it uses as much as digits as its factorization.

135551555533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 975191186.

The product of its digits is 2109375, while the sum is 46.

The spelling of 135551555533 in words is "one hundred thirty-five billion, five hundred fifty-one million, five hundred fifty-five thousand, five hundred thirty-three".