12506383305 has 48 divisors (see below), whose sum is σ = 23383760400. Its totient is φ = 6146832384.

The previous prime is 12506383303. The next prime is 12506383363. The reversal of 12506383305 is 50338360521.

12506383305 is a `hidden beast` number, since 12 + 5 + 0 + 638 + 3 + 3 + 0 + 5 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 5784515136 + 6721868169 = 76056^2 + 81987^2 .

It is not a de Polignac number, because 12506383305 - 2¹ = 12506383303 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12506383305.

It is not an unprimeable number, because it can be changed into a prime (12506383303) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 343621 + ... + 378269.

It is an arithmetic number, because the mean of its divisors is an integer number (487161675).

Almost surely, 2^12506383305 is an apocalyptic number.

12506383305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12506383305 is a deficient number, since it is larger than the sum of its proper divisors (10877377095).

12506383305 is a wasteful number, since it uses less digits than its factorization.

12506383305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35290 (or 35287 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The spelling of 12506383305 in words is "twelve billion, five hundred six million, three hundred eighty-three thousand, three hundred five".