12905588650 has 24 divisors (see below), whose sum is σ = 25048066464. Its totient is φ = 4937790000.

The previous prime is 12905588639. The next prime is 12905588687. The reversal of 12905588650 is 5688550921.

12905588650 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 12905588594 and 12905588603.

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 11 ways as a sum of consecutive naturals, for example, 5609976 + ... + 5612275.

It is an arithmetic number, because the mean of its divisors is an integer number (1043669436).

Almost surely, 2^12905588650 is an apocalyptic number.

12905588650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12905588650 is a deficient number, since it is larger than the sum of its proper divisors (12142477814).

12905588650 is a wasteful number, since it uses less digits than its factorization.

12905588650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11222286 (or 11222281 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 49.

The spelling of 12905588650 in words is "twelve billion, nine hundred five million, five hundred eighty-eight thousand, six hundred fifty".