221647610671316 has 24 divisors (see below), whose sum is σ = 396244007322240. Its totient is φ = 108436321104192.

The previous prime is 221647610671303. The next prime is 221647610671327. The reversal of 221647610671316 is 613176016746122.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159801806 + ... + 161182853.

It is an arithmetic number, because the mean of its divisors is an integer number (16510166971760).

Almost surely, 2^{221647610671316} is an apocalyptic number.

It is an amenable number.

221647610671316 is a deficient number, since it is larger than the sum of its proper divisors (174596396650924).

221647610671316 is a wasteful number, since it uses less digits than its factorization.

221647610671316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320988383 (or 320988381 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 53.

The spelling of 221647610671316 in words is "two hundred twenty-one trillion, six hundred forty-seven billion, six hundred ten million, six hundred seventy-one thousand, three hundred sixteen".