135124535551 has 4 divisors (see below), whose sum is σ = 135156177504. Its totient is φ = 135092893600.

The previous prime is 135124535543. The next prime is 135124535563. The reversal of 135124535551 is 155535421531.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 135124535551 - 2³ = 135124535543 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 (135124535591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15814570 + ... + 15823111.

It is an arithmetic number, because the mean of its divisors is an integer number (33789044376).

Almost surely, 2^135124535551 is an apocalyptic number.

135124535551 is a deficient number, since it is larger than the sum of its proper divisors (31641953).

135124535551 is an equidigital number, since it uses as much as digits as its factorization.

135124535551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31641952.

The product of its digits is 225000, while the sum is 40.

The spelling of 135124535551 in words is "one hundred thirty-five billion, one hundred twenty-four million, five hundred thirty-five thousand, five hundred fifty-one".