216201520135 has 16 divisors (see below), whose sum is σ = 267825457152. Its totient is φ = 167372733600.

The previous prime is 216201520103. The next prime is 216201520217. The reversal of 216201520135 is 531025102612.

It is not a de Polignac number, because 216201520135 - 2⁵ = 216201520103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4877020 + ... + 4921150.

It is an arithmetic number, because the mean of its divisors is an integer number (16739091072).

Almost surely, 2^216201520135 is an apocalyptic number.

216201520135 is a deficient number, since it is larger than the sum of its proper divisors (51623937017).

216201520135 is a wasteful number, since it uses less digits than its factorization.

216201520135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75774.

The product of its (nonzero) digits is 3600, while the sum is 28.

Adding to 216201520135 its reverse (531025102612), we get a palindrome (747226622747).

The spelling of 216201520135 in words is "two hundred sixteen billion, two hundred one million, five hundred twenty thousand, one hundred thirty-five".