1768266220229 has 4 divisors (see below), whose sum is σ = 1768271856876. Its totient is φ = 1768260583584.

The previous prime is 1768266220181. The next prime is 1768266220361. The reversal of 1768266220229 is 9220226628671.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 646901707204 + 1121364513025 = 804302^2 + 1058945^2 .

It is a cyclic number.

It is not a de Polignac number, because 1768266220229 - 2¹⁶ = 1768266154693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1768266220829) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2318174 + ... + 2985039.

It is an arithmetic number, because the mean of its divisors is an integer number (442067964219).

Almost surely, 2^{1768266220229} is an apocalyptic number.

It is an amenable number.

1768266220229 is a deficient number, since it is larger than the sum of its proper divisors (5636647).

1768266220229 is an equidigital number, since it uses as much as digits as its factorization.

1768266220229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5636646.

The product of its (nonzero) digits is 3483648, while the sum is 53.

The spelling of 1768266220229 in words is "one trillion, seven hundred sixty-eight billion, two hundred sixty-six million, two hundred twenty thousand, two hundred twenty-nine".