216120004016 has 40 divisors (see below), whose sum is σ = 478762538784. Its totient is φ = 92582000640.

The previous prime is 216120003977. The next prime is 216120004019. The reversal of 216120004016 is 610400021612.

It is a super-2 number, since 2×216120004016² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 216120003982 and 216120004000.

It is not an unprimeable number, because it can be changed into a prime (216120004019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 169895 + ... + 679046.

Almost surely, 2^216120004016 is an apocalyptic number.

It is an amenable number.

216120004016 is an abundant number, since it is smaller than the sum of its proper divisors (262642534768).

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

216120004016 is a wasteful number, since it uses less digits than its factorization.

216120004016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 851229 (or 851223 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 216120004016 its reverse (610400021612), we get a palindrome (826520025628).

The spelling of 216120004016 in words is "two hundred sixteen billion, one hundred twenty million, four thousand, sixteen".