216109713672 has 48 divisors (see below), whose sum is σ = 586728265500. Its totient is φ = 71860432896.

The previous prime is 216109713671. The next prime is 216109713691. The reversal of 216109713672 is 276317901612.

216109713672 is a `hidden beast` number, since 21 + 610 + 9 + 7 + 1 + 3 + 6 + 7 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 187096042116 + 29013671556 = 432546^2 + 170334^2 .

It is not an unprimeable number, because it can be changed into a prime (216109713671) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3639897 + ... + 3698792.

Almost surely, 2^216109713672 is an apocalyptic number.

It is an amenable number.

216109713672 is an abundant number, since it is smaller than the sum of its proper divisors (370618551828).

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

216109713672 is a wasteful number, since it uses less digits than its factorization.

216109713672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7339110 (or 7339103 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 45.

The spelling of 216109713672 in words is "two hundred sixteen billion, one hundred nine million, seven hundred thirteen thousand, six hundred seventy-two".