216378713172188 has 288 divisors, whose sum is σ = 502226705164800. Its totient is φ = 79573424910336.

The previous prime is 216378713172179. The next prime is 216378713172221. The reversal of 216378713172188 is 881271317873612.

216378713172188 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1368739406 + ... + 1368897482.

Almost surely, 2^{216378713172188} is an apocalyptic number.

216378713172188 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 216378713172188, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (251113352582400).

216378713172188 is an abundant number, since it is smaller than the sum of its proper divisors (285847991992612).

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

216378713172188 is a wasteful number, since it uses less digits than its factorization.

216378713172188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158477 (or 158458 counting only the distinct ones).

The product of its digits is 37933056, while the sum is 65.

The spelling of 216378713172188 in words is "two hundred sixteen trillion, three hundred seventy-eight billion, seven hundred thirteen million, one hundred seventy-two thousand, one hundred eighty-eight".