6011780305 has 4 divisors (see below), whose sum is σ = 7214136372. Its totient is φ = 4809424240.

The previous prime is 6011780303. The next prime is 6011780309. The reversal of 6011780305 is 5030871106.

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 4524983824 + 1486796481 = 67268^2 + 38559^2 .

It is not a de Polignac number, because 6011780305 - 2¹ = 6011780303 is a prime.

It is a super-2 number, since 2×6011780305² = 72283004871171786050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6011780303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 601178026 + ... + 601178035.

It is an arithmetic number, because the mean of its divisors is an integer number (1803534093).

Almost surely, 2^6011780305 is an apocalyptic number.

It is an amenable number.

6011780305 is a deficient number, since it is larger than the sum of its proper divisors (1202356067).

6011780305 is a wasteful number, since it uses less digits than its factorization.

6011780305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1202356066.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 6011780305 is about 77535.6711778521. The cubic root of 6011780305 is about 1818.3090506384.

The spelling of 6011780305 in words is "six billion, eleven million, seven hundred eighty thousand, three hundred five".