135555128159 has 8 divisors (see below), whose sum is σ = 148094842752. Its totient is φ = 123051500440.

The previous prime is 135555128153. The next prime is 135555128167. The reversal of 135555128159 is 951821555531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 135555128159 - 2⁴ = 135555128143 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 (135555128153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9013859 + ... + 9028884.

It is an arithmetic number, because the mean of its divisors is an integer number (18511855344).

Almost surely, 2^135555128159 is an apocalyptic number.

135555128159 is a deficient number, since it is larger than the sum of its proper divisors (12539714593).

135555128159 is a wasteful number, since it uses less digits than its factorization.

135555128159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18043437.

The product of its digits is 1350000, while the sum is 50.

The spelling of 135555128159 in words is "one hundred thirty-five billion, five hundred fifty-five million, one hundred twenty-eight thousand, one hundred fifty-nine".