216648152228 has 6 divisors (see below), whose sum is σ = 379134266406. Its totient is φ = 108324076112.

The previous prime is 216648152219. The next prime is 216648152239. The reversal of 216648152228 is 822251846612.

It can be written as a sum of positive squares in only one way, i.e., 142545512704 + 74102639524 = 377552^2 + 272218^2 .

It is a super-2 number, since 2×216648152228² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27081019025 + ... + 27081019032.

It is an arithmetic number, because the mean of its divisors is an integer number (63189044401).

Almost surely, 2^216648152228 is an apocalyptic number.

It is an amenable number.

216648152228 is a deficient number, since it is larger than the sum of its proper divisors (162486114178).

216648152228 is a wasteful number, since it uses less digits than its factorization.

216648152228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54162038061 (or 54162038059 counting only the distinct ones).

The product of its digits is 737280, while the sum is 47.

The spelling of 216648152228 in words is "two hundred sixteen billion, six hundred forty-eight million, one hundred fifty-two thousand, two hundred twenty-eight".