220316645641 has 3 divisors (see below), whose sum is σ = 220317115021. Its totient is φ = 220316176262.

The previous prime is 220316645623. The next prime is 220316645831. The reversal of 220316645641 is 146546613022.

The square root of 220316645641 is 469379.

It is a perfect power (a square), and thus also a powerful number.

220316645641 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 220316645641 - 2⁵ = 220316645609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220316645594 and 220316645603.

It is not an unprimeable number, because it can be changed into a prime (220316642641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 234690 + ... + 704068.

Almost surely, 2^220316645641 is an apocalyptic number.

220316645641 is the 469379-th square number.

220316645641 is the 234690-th centered octagonal number.

It is an amenable number.

220316645641 is a deficient number, since it is larger than the sum of its proper divisors (469380).

220316645641 is an frugal number, since it uses more digits than its factorization.

220316645641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 938758 (or 469379 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 40.

The spelling of 220316645641 in words is "two hundred twenty billion, three hundred sixteen million, six hundred forty-five thousand, six hundred forty-one".