216696615544068 has 96 divisors (see below), whose sum is σ = 552099723356160. Its totient is φ = 65605142960640.

The previous prime is 216696615544063. The next prime is 216696615544081. The reversal of 216696615544068 is 860445516696612.

It is a super-2 number, since 2×216696615544068² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 216696615543993 and 216696615544011.

It is not an unprimeable number, because it can be changed into a prime (216696615544063) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 973023153 + ... + 973245831.

It is an arithmetic number, because the mean of its divisors is an integer number (5751038784960).

Almost surely, 2^{216696615544068} is an apocalyptic number.

It is an amenable number.

216696615544068 is an abundant number, since it is smaller than the sum of its proper divisors (335403107812092).

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

216696615544068 is a wasteful number, since it uses less digits than its factorization.

216696615544068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229457 (or 229455 counting only the distinct ones).

The product of its (nonzero) digits is 447897600, while the sum is 69.

The spelling of 216696615544068 in words is "two hundred sixteen trillion, six hundred ninety-six billion, six hundred fifteen million, five hundred forty-four thousand, sixty-eight".