12789525530 has 8 divisors (see below), whose sum is σ = 23021145972. Its totient is φ = 5115810208.

The previous prime is 12789525523. The next prime is 12789525577. The reversal of 12789525530 is 3552598721.

It can be written as a sum of positive squares in 2 ways, for example, as 12599389009 + 190136521 = 112247^2 + 13789^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 639476267 + ... + 639476286.

Almost surely, 2^12789525530 is an apocalyptic number.

12789525530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12789525530 is a deficient number, since it is larger than the sum of its proper divisors (10231620442).

12789525530 is a wasteful number, since it uses less digits than its factorization.

12789525530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1278952560.

The product of its (nonzero) digits is 756000, while the sum is 47.

The spelling of 12789525530 in words is "twelve billion, seven hundred eighty-nine million, five hundred twenty-five thousand, five hundred thirty".