12305879550 has 36 divisors (see below), whose sum is σ = 33061797600. Its totient is φ = 3281567760.

The previous prime is 12305879519. The next prime is 12305879639. The reversal of 12305879550 is 5597850321.

12305879550 is a `hidden beast` number, since 1 + 23 + 0 + 5 + 8 + 79 + 550 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 12305879496 and 12305879505.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 13672750 + ... + 13673649.

Almost surely, 2^12305879550 is an apocalyptic number.

12305879550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12305879550 is an abundant number, since it is smaller than the sum of its proper divisors (20755918050).

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

12305879550 is a wasteful number, since it uses less digits than its factorization.

12305879550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27346417 (or 27346409 counting only the distinct ones).

The product of its (nonzero) digits is 378000, while the sum is 45.

The spelling of 12305879550 in words is "twelve billion, three hundred five million, eight hundred seventy-nine thousand, five hundred fifty".