216541105512536 has 64 divisors (see below), whose sum is σ = 468279219091200. Its totient is φ = 91950838167168.

The previous prime is 216541105512421. The next prime is 216541105512539. The reversal of 216541105512536 is 635215501145612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216541105512539) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 718674731 + ... + 718975973.

It is an arithmetic number, because the mean of its divisors is an integer number (7316862798300).

Almost surely, 2^{216541105512536} is an apocalyptic number.

It is an amenable number.

216541105512536 is an abundant number, since it is smaller than the sum of its proper divisors (251738113578664).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

216541105512536 is a wasteful number, since it uses less digits than its factorization.

216541105512536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419128 (or 419124 counting only the distinct ones).

The product of its (nonzero) digits is 1080000, while the sum is 47.

The spelling of 216541105512536 in words is "two hundred sixteen trillion, five hundred forty-one billion, one hundred five million, five hundred twelve thousand, five hundred thirty-six".