216535632036 has 24 divisors (see below), whose sum is σ = 509106680544. Its totient is φ = 71627562240.

The previous prime is 216535631951. The next prime is 216535632037. The reversal of 216535632036 is 630236535612.

It is not an unprimeable number, because it can be changed into a prime (216535632037) 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, 68871085 + ... + 68874228.

It is an arithmetic number, because the mean of its divisors is an integer number (21212778356).

Almost surely, 2^216535632036 is an apocalyptic number.

It is an amenable number.

216535632036 is an abundant number, since it is smaller than the sum of its proper divisors (292571048508).

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

216535632036 is a wasteful number, since it uses less digits than its factorization.

216535632036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137745451 (or 137745449 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 42.

The spelling of 216535632036 in words is "two hundred sixteen billion, five hundred thirty-five million, six hundred thirty-two thousand, thirty-six".