305340032545 has 12 divisors (see below), whose sum is σ = 389229302844. Its totient is φ = 229903082240.

The previous prime is 305340032521. The next prime is 305340032567. The reversal of 305340032545 is 545230043503.

It can be written as a sum of positive squares in 6 ways, for example, as 41736855616 + 263603176929 = 204296^2 + 513423^2 .

It is not a de Polignac number, because 305340032545 - 2²⁷ = 305205814817 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 305340032545.

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, 105652546 + ... + 105655435.

It is an arithmetic number, because the mean of its divisors is an integer number (32435775237).

Almost surely, 2^305340032545 is an apocalyptic number.

It is an amenable number.

305340032545 is a deficient number, since it is larger than the sum of its proper divisors (83889270299).

305340032545 is a wasteful number, since it uses less digits than its factorization.

305340032545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211308020 (or 211308003 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 34.

The spelling of 305340032545 in words is "three hundred five billion, three hundred forty million, thirty-two thousand, five hundred forty-five".