216230247840 has 384 divisors, whose sum is σ = 724840704000. Its totient is φ = 54031380480.

The previous prime is 216230247817. The next prime is 216230247907. The reversal of 216230247840 is 48742032612.

It is a happy 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, 513610830 + ... + 513611250.

It is an arithmetic number, because the mean of its divisors is an integer number (1887606000).

Almost surely, 2^216230247840 is an apocalyptic number.

216230247840 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 216230247840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (362420352000).

216230247840 is an abundant number, since it is smaller than the sum of its proper divisors (508610456160).

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

216230247840 is a wasteful number, since it uses less digits than its factorization.

216230247840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 940 (or 932 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 39.

The spelling of 216230247840 in words is "two hundred sixteen billion, two hundred thirty million, two hundred forty-seven thousand, eight hundred forty".