221640313244515 has 32 divisors (see below), whose sum is σ = 290209674154752. Its totient is φ = 161158317936000.

The previous prime is 221640313244503. The next prime is 221640313244521. The reversal of 221640313244515 is 515442313046122.

It is a happy number.

It is not a de Polignac number, because 221640313244515 - 2⁷ = 221640313244387 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6339264424 + ... + 6339299386.

It is an arithmetic number, because the mean of its divisors is an integer number (9069052317336).

Almost surely, 2^{221640313244515} is an apocalyptic number.

221640313244515 is a deficient number, since it is larger than the sum of its proper divisors (68569360910237).

221640313244515 is a wasteful number, since it uses less digits than its factorization.

221640313244515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56451.

The product of its (nonzero) digits is 691200, while the sum is 43.

The spelling of 221640313244515 in words is "two hundred twenty-one trillion, six hundred forty billion, three hundred thirteen million, two hundred forty-four thousand, five hundred fifteen".