216187203782 has 16 divisors (see below), whose sum is σ = 353790968832. Its totient is φ = 98258552520.

The previous prime is 216187203779. The next prime is 216187203829. The reversal of 216187203782 is 287302781612.

It is a congruent number.

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, 149558 + ... + 674345.

It is an arithmetic number, because the mean of its divisors is an integer number (22111935552).

Almost surely, 2^216187203782 is an apocalyptic number.

216187203782 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

216187203782 is a deficient number, since it is larger than the sum of its proper divisors (137603765050).

216187203782 is a wasteful number, since it uses less digits than its factorization.

216187203782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 835843.

The product of its (nonzero) digits is 451584, while the sum is 47.

The spelling of 216187203782 in words is "two hundred sixteen billion, one hundred eighty-seven million, two hundred three thousand, seven hundred eighty-two".