216188857651158 has 24 divisors (see below), whose sum is σ = 535324790374608. Its totient is φ = 61768245043152.

The previous prime is 216188857651153. The next prime is 216188857651181. The reversal of 216188857651158 is 851156758881612.

216188857651158 is a `hidden beast` number, since 2 + 1 + 6 + 1 + 8 + 8 + 8 + 57 + 6 + 511 + 58 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216188857651153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 857892292141 + ... + 857892292392.

It is an arithmetic number, because the mean of its divisors is an integer number (22305199598942).

Almost surely, 2^{216188857651158} is an apocalyptic number.

216188857651158 is an abundant number, since it is smaller than the sum of its proper divisors (319135932723450).

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

216188857651158 is a wasteful number, since it uses less digits than its factorization.

216188857651158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1715784584548 (or 1715784584545 counting only the distinct ones).

The product of its digits is 258048000, while the sum is 72.

The spelling of 216188857651158 in words is "two hundred sixteen trillion, one hundred eighty-eight billion, eight hundred fifty-seven million, six hundred fifty-one thousand, one hundred fifty-eight".