216345680224368 has 80 divisors (see below), whose sum is σ = 567755702976000. Its totient is φ = 70980416121600.

The previous prime is 216345680224339. The next prime is 216345680224397. The reversal of 216345680224368 is 863422086543612.

It is an interprime number because it is at equal distance from previous prime (216345680224339) and next prime (216345680224397).

It is a super-2 number, since 2×216345680224368² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136132068 + ... + 137712131.

It is an arithmetic number, because the mean of its divisors is an integer number (7096946287200).

Almost surely, 2^{216345680224368} is an apocalyptic number.

It is an amenable number.

216345680224368 is an abundant number, since it is smaller than the sum of its proper divisors (351410022751632).

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

216345680224368 is a wasteful number, since it uses less digits than its factorization.

216345680224368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273844470 (or 273844464 counting only the distinct ones).

The product of its (nonzero) digits is 79626240, while the sum is 60.

The spelling of 216345680224368 in words is "two hundred sixteen trillion, three hundred forty-five billion, six hundred eighty million, two hundred twenty-four thousand, three hundred sixty-eight".