221440716563365 has 16 divisors (see below), whose sum is σ = 286181523548928. Its totient is φ = 163518605292096.

The previous prime is 221440716563329. The next prime is 221440716563371. The reversal of 221440716563365 is 563365617044122.

It is a cyclic number.

It is not a de Polignac number, because 221440716563365 - 2¹⁵ = 221440716530597 is a prime.

It is a Duffinian number.

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, 69757687 + ... + 72862996.

It is an arithmetic number, because the mean of its divisors is an integer number (17886345221808).

Almost surely, 2^{221440716563365} is an apocalyptic number.

It is an amenable number.

221440716563365 is a deficient number, since it is larger than the sum of its proper divisors (64740806985563).

221440716563365 is a wasteful number, since it uses less digits than its factorization.

221440716563365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142644588.

The product of its (nonzero) digits is 21772800, while the sum is 55.

The spelling of 221440716563365 in words is "two hundred twenty-one trillion, four hundred forty billion, seven hundred sixteen million, five hundred sixty-three thousand, three hundred sixty-five".