30545078305 has 24 divisors (see below), whose sum is σ = 42688482408. Its totient is φ = 20920612608.

The previous prime is 30545078299. The next prime is 30545078353. The reversal of 30545078305 is 50387054503.

It can be written as a sum of positive squares in 4 ways, for example, as 4621824256 + 25923254049 = 67984^2 + 161007^2 .

It is not a de Polignac number, because 30545078305 - 2⁵ = 30545078273 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 137227 + ... + 282703.

It is an arithmetic number, because the mean of its divisors is an integer number (1778686767).

Almost surely, 2^30545078305 is an apocalyptic number.

30545078305 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

30545078305 is a deficient number, since it is larger than the sum of its proper divisors (12143404103).

30545078305 is a wasteful number, since it uses less digits than its factorization.

30545078305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146353 (or 146346 counting only the distinct ones).

The product of its (nonzero) digits is 252000, while the sum is 40.

The spelling of 30545078305 in words is "thirty billion, five hundred forty-five million, seventy-eight thousand, three hundred five".