304891340545 has 12 divisors (see below), whose sum is σ = 402154198740. Its totient is φ = 221739156320.

The previous prime is 304891340489. The next prime is 304891340569. The reversal of 304891340545 is 545043198403.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 110671324929 + 194220015616 = 332673^2 + 440704^2 .

It is not a de Polignac number, because 304891340545 - 2¹³ = 304891332353 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 304891340495 and 304891340504.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 251975710 + ... + 251976919.

It is an arithmetic number, because the mean of its divisors is an integer number (33512849895).

Almost surely, 2^304891340545 is an apocalyptic number.

It is an amenable number.

304891340545 is a deficient number, since it is larger than the sum of its proper divisors (97262858195).

304891340545 is a wasteful number, since it uses less digits than its factorization.

304891340545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503952656 (or 503952645 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 46.

The spelling of 304891340545 in words is "three hundred four billion, eight hundred ninety-one million, three hundred forty thousand, five hundred forty-five".