221716163664352 has 96 divisors (see below), whose sum is σ = 532513247777280. Its totient is φ = 88752207720960.

The previous prime is 221716163664313. The next prime is 221716163664383. The reversal of 221716163664352 is 253466361617122.

It is a junction number, because it is equal to n+sod(n) for n = 221716163664293 and 221716163664302.

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, 366563763 + ... + 367168114.

It is an arithmetic number, because the mean of its divisors is an integer number (5547012997680).

Almost surely, 2^{221716163664352} is an apocalyptic number.

It is an amenable number.

221716163664352 is an abundant number, since it is smaller than the sum of its proper divisors (310797084112928).

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

221716163664352 is a wasteful number, since it uses less digits than its factorization.

221716163664352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 733731984 (or 733731976 counting only the distinct ones).

The product of its digits is 13063680, while the sum is 55.

The spelling of 221716163664352 in words is "two hundred twenty-one trillion, seven hundred sixteen billion, one hundred sixty-three million, six hundred sixty-four thousand, three hundred fifty-two".