216390303360 has 1024 divisors, whose sum is σ = 975283200000. Its totient is φ = 44950671360.

The previous prime is 216390303323. The next prime is 216390303373. The reversal of 216390303360 is 63303093612.

216390303360 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 65195781 + ... + 65199099.

It is an arithmetic number, because the mean of its divisors is an integer number (952425000).

Almost surely, 2^216390303360 is an apocalyptic number.

216390303360 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 216390303360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (487641600000).

216390303360 is an abundant number, since it is smaller than the sum of its proper divisors (758892896640).

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

216390303360 is a wasteful number, since it uses less digits than its factorization.

216390303360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3379 (or 3347 counting only the distinct ones).

The product of its (nonzero) digits is 52488, while the sum is 36.

Adding to 216390303360 its reverse (63303093612), we get a palindrome (279693396972).

The spelling of 216390303360 in words is "two hundred sixteen billion, three hundred ninety million, three hundred three thousand, three hundred sixty".