216473992000 has 448 divisors, whose sum is σ = 665835356160. Its totient is φ = 68034816000.

The previous prime is 216473991973. The next prime is 216473992037. The reversal of 216473992000 is 299374612.

It is a tau number, because it is divible by the number of its divisors (448).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 32980719 + ... + 32987281.

Almost surely, 2^216473992000 is an apocalyptic number.

216473992000 is a gapful number since it is divisible by the number (20) 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 216473992000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (332917678080).

216473992000 is an abundant number, since it is smaller than the sum of its proper divisors (449361364160).

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

216473992000 is a wasteful number, since it uses less digits than its factorization.

216473992000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6647 (or 6627 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 43.

The spelling of 216473992000 in words is "two hundred sixteen billion, four hundred seventy-three million, nine hundred ninety-two thousand".