12309761550 has 48 divisors (see below), whose sum is σ = 30596367600. Its totient is φ = 3275274240.

The previous prime is 12309761539. The next prime is 12309761599. The reversal of 12309761550 is 5516790321.

12309761550 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12309761499 and 12309761508.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24037 + ... + 158736.

It is an arithmetic number, because the mean of its divisors is an integer number (637424325).

Almost surely, 2^12309761550 is an apocalyptic number.

12309761550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12309761550 is an abundant number, since it is smaller than the sum of its proper divisors (18286606050).

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

12309761550 is a wasteful number, since it uses less digits than its factorization.

12309761550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183237 (or 183232 counting only the distinct ones).

The product of its (nonzero) digits is 56700, while the sum is 39.

The spelling of 12309761550 in words is "twelve billion, three hundred nine million, seven hundred sixty-one thousand, five hundred fifty".