220344242693 has 2 divisors, whose sum is σ = 220344242694. Its totient is φ = 220344242692.

The previous prime is 220344242687. The next prime is 220344242753. The reversal of 220344242693 is 396242443022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 161296214689 + 59048028004 = 401617^2 + 242998^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220344242693 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220344242693.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220344242683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110172121346 + 110172121347.

It is an arithmetic number, because the mean of its divisors is an integer number (110172121347).

Almost surely, 2^220344242693 is an apocalyptic number.

It is an amenable number.

220344242693 is a deficient number, since it is larger than the sum of its proper divisors (1).

220344242693 is an equidigital number, since it uses as much as digits as its factorization.

220344242693 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 497664, while the sum is 41.

The spelling of 220344242693 in words is "two hundred twenty billion, three hundred forty-four million, two hundred forty-two thousand, six hundred ninety-three".