135550221032155 has 8 divisors (see below), whose sum is σ = 163048475898000. Its totient is φ = 108181369719456.

The previous prime is 135550221032131. The next prime is 135550221032221. The reversal of 135550221032155 is 551230122055531.

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

It is a cyclic number.

It is not a de Polignac number, because 135550221032155 - 2¹⁷ = 135550220901083 is a prime.

It is a super-3 number, since 3×135550221032155³ (a number of 43 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32350885980 + ... + 32350890169.

It is an arithmetic number, because the mean of its divisors is an integer number (20381059487250).

Almost surely, 2^{135550221032155} is an apocalyptic number.

135550221032155 is a deficient number, since it is larger than the sum of its proper divisors (27498254865845).

135550221032155 is an equidigital number, since it uses as much as digits as its factorization.

135550221032155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64701776573.

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

Adding to 135550221032155 its reverse (551230122055531), we get a palindrome (686780343087686).

The spelling of 135550221032155 in words is "one hundred thirty-five trillion, five hundred fifty billion, two hundred twenty-one million, thirty-two thousand, one hundred fifty-five".