12305206530 has 112 divisors (see below), whose sum is σ = 33472871424. Its totient is φ = 3255305760.

The previous prime is 12305206523. The next prime is 12305206541. The reversal of 12305206530 is 3560250321.

12305206530 is a `hidden beast` number, since 1 + 2 + 3 + 0 + 5 + 2 + 0 + 653 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 12305206494 and 12305206503.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 919185 + ... + 932475.

Almost surely, 2^12305206530 is an apocalyptic number.

12305206530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12305206530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16736435712).

12305206530 is an abundant number, since it is smaller than the sum of its proper divisors (21167664894).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12305206530 is a wasteful number, since it uses less digits than its factorization.

12305206530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13443 (or 13428 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

Adding to 12305206530 its reverse (3560250321), we get a palindrome (15865456851).

The spelling of 12305206530 in words is "twelve billion, three hundred five million, two hundred six thousand, five hundred thirty".