216442951588 has 24 divisors (see below), whose sum is σ = 385741170360. Its totient is φ = 106238161920.

The previous prime is 216442951579. The next prime is 216442951603. The reversal of 216442951588 is 885159244612.

216442951588 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 48172348324 + 168270603264 = 219482^2 + 410208^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 747181 + ... + 995572.

It is an arithmetic number, because the mean of its divisors is an integer number (16072548765).

Almost surely, 2^216442951588 is an apocalyptic number.

It is an amenable number.

216442951588 is a deficient number, since it is larger than the sum of its proper divisors (169298218772).

216442951588 is a wasteful number, since it uses less digits than its factorization.

216442951588 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1743327 (or 1743325 counting only the distinct ones).

The product of its digits is 5529600, while the sum is 55.

The spelling of 216442951588 in words is "two hundred sixteen billion, four hundred forty-two million, nine hundred fifty-one thousand, five hundred eighty-eight".