220316645642 has 8 divisors (see below), whose sum is σ = 330478257636. Its totient is φ = 110157226432.

The previous prime is 220316645623. The next prime is 220316645831. The reversal of 220316645642 is 246546613022.

220316645642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 469379²+1.

It can be written as a sum of positive squares in 2 ways, for example, as 220316645641 + 1 = 469379^2 + 1^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 220316645642.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 268463 + ... + 716034.

Almost surely, 2^220316645642 is an apocalyptic number.

220316645642 is a deficient number, since it is larger than the sum of its proper divisors (110161611994).

220316645642 is a wasteful number, since it uses less digits than its factorization.

220316645642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1096392.

The product of its (nonzero) digits is 414720, while the sum is 41.

The spelling of 220316645642 in words is "two hundred twenty billion, three hundred sixteen million, six hundred forty-five thousand, six hundred forty-two".