12030510305 has 12 divisors (see below), whose sum is σ = 15868343316. Its totient is φ = 8749461600.

The previous prime is 12030510259. The next prime is 12030510319. The reversal of 12030510305 is 50301503021.

It can be written as a sum of positive squares in 2 ways, for example, as 6966907024 + 5063603281 = 83468^2 + 71159^2 .

It is not a de Polignac number, because 12030510305 - 2³² = 7735543009 is a prime.

It is a super-2 number, since 2×12030510305² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9941966 + ... + 9943175.

It is an arithmetic number, because the mean of its divisors is an integer number (1322361943).

Almost surely, 2^12030510305 is an apocalyptic number.

It is an amenable number.

12030510305 is a deficient number, since it is larger than the sum of its proper divisors (3837833011).

12030510305 is a wasteful number, since it uses less digits than its factorization.

12030510305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19885168 (or 19885157 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 20.

The spelling of 12030510305 in words is "twelve billion, thirty million, five hundred ten thousand, three hundred five".