305613916945 has 4 divisors (see below), whose sum is σ = 366736700340. Its totient is φ = 244491133552.

The previous prime is 305613916913. The next prime is 305613916967. The reversal of 305613916945 is 549619316503.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 549619316503 = 41 ⋅13405349183.

It can be written as a sum of positive squares in 2 ways, for example, as 73255211649 + 232358705296 = 270657^2 + 482036^2 .

It is a cyclic number.

It is not a de Polignac number, because 305613916945 - 2⁵ = 305613916913 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 305613916892 and 305613916901.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30561391690 + ... + 30561391699.

It is an arithmetic number, because the mean of its divisors is an integer number (91684175085).

Almost surely, 2^305613916945 is an apocalyptic number.

It is an amenable number.

305613916945 is a deficient number, since it is larger than the sum of its proper divisors (61122783395).

305613916945 is an equidigital number, since it uses as much as digits as its factorization.

305613916945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61122783394.

The product of its (nonzero) digits is 2624400, while the sum is 52.

The spelling of 305613916945 in words is "three hundred five billion, six hundred thirteen million, nine hundred sixteen thousand, nine hundred forty-five".