216215203436512 has 96 divisors (see below), whose sum is σ = 498358251095040. Its totient is φ = 90402013854720.

The previous prime is 216215203436443. The next prime is 216215203436527. The reversal of 216215203436512 is 215634302512612.

It is a super-2 number, since 2×216215203436512² (a number of 29 digits) contains 22 as substring.

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, 645715789 + ... + 646050547.

It is an arithmetic number, because the mean of its divisors is an integer number (5191231782240).

Almost surely, 2^{216215203436512} is an apocalyptic number.

It is an amenable number.

216215203436512 is an abundant number, since it is smaller than the sum of its proper divisors (282143047658528).

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

216215203436512 is a wasteful number, since it uses less digits than its factorization.

216215203436512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405144 (or 405136 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 43.

The spelling of 216215203436512 in words is "two hundred sixteen trillion, two hundred fifteen billion, two hundred three million, four hundred thirty-six thousand, five hundred twelve".