216021011425680 has 240 divisors, whose sum is σ = 691890991767360. Its totient is φ = 55749724111872.

The previous prime is 216021011425673. The next prime is 216021011425693. The reversal of 216021011425680 is 86524110120612.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (240).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 46136827 + ... + 50602853.

It is an arithmetic number, because the mean of its divisors is an integer number (2882879132364).

Almost surely, 2^{216021011425680} is an apocalyptic number.

216021011425680 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 216021011425680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (345945495883680).

216021011425680 is an abundant number, since it is smaller than the sum of its proper divisors (475869980341680).

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

216021011425680 is a wasteful number, since it uses less digits than its factorization.

216021011425680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4466238 (or 4466189 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 39.

The spelling of 216021011425680 in words is "two hundred sixteen trillion, twenty-one billion, eleven million, four hundred twenty-five thousand, six hundred eighty".