12188426530 has 128 divisors (see below), whose sum is σ = 26374118400. Its totient is φ = 3967681536.

The previous prime is 12188426491. The next prime is 12188426563. The reversal of 12188426530 is 3562488121.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 53224456 + ... + 53224684.

It is an arithmetic number, because the mean of its divisors is an integer number (206047800).

Almost surely, 2^12188426530 is an apocalyptic number.

12188426530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12188426530 is an abundant number, since it is smaller than the sum of its proper divisors (14185691870).

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

12188426530 is a wasteful number, since it uses less digits than its factorization.

12188426530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 596.

The product of its (nonzero) digits is 92160, while the sum is 40.

The spelling of 12188426530 in words is "twelve billion, one hundred eighty-eight million, four hundred twenty-six thousand, five hundred thirty".