306556043013 has 16 divisors (see below), whose sum is σ = 495444110400. Its totient is φ = 185791541040.

The previous prime is 306556043011. The next prime is 306556043023. The reversal of 306556043013 is 310340655603.

306556043013 is a `hidden beast` number, since 3 + 0 + 6 + 5 + 5 + 604 + 30 + 13 = 666.

It is not a de Polignac number, because 306556043013 - 2¹ = 306556043011 is a prime.

It is a super-2 number, since 2×306556043013² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (306556043011) 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 15 ways as a sum of consecutive naturals, for example, 516087318 + ... + 516087911.

It is an arithmetic number, because the mean of its divisors is an integer number (30965256900).

Almost surely, 2^306556043013 is an apocalyptic number.

306556043013 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

306556043013 is a deficient number, since it is larger than the sum of its proper divisors (188888067387).

306556043013 is a wasteful number, since it uses less digits than its factorization.

306556043013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1032175249 (or 1032175243 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 36.

Adding to 306556043013 its reverse (310340655603), we get a palindrome (616896698616).

The spelling of 306556043013 in words is "three hundred six billion, five hundred fifty-six million, forty-three thousand, thirteen".