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12500444120 = 235312511103
BaseRepresentation
bin10111010010001010…
…11010001111011000
31012021011210100121212
423221011122033120
5201100103202440
65424223522252
7621526010333
oct135105321730
935234710555
1012500444120
1153351a175a
12250a459388
131242a43ac8
1486828b61a
154d2675465
hex2e915a3d8

12500444120 has 16 divisors (see below), whose sum is σ = 28125999360. Its totient is φ = 5000177632.

The previous prime is 12500444059. The next prime is 12500444141. The reversal of 12500444120 is 2144400521.

12500444120 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×125004441202 (a number of 21 digits) contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 156255512 + ... + 156255591.

It is an arithmetic number, because the mean of its divisors is an integer number (1757874960).

Almost surely, 212500444120 is an apocalyptic number.

12500444120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12500444120 is an abundant number, since it is smaller than the sum of its proper divisors (15625555240).

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

12500444120 is a wasteful number, since it uses less digits than its factorization.

12500444120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312511114 (or 312511110 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 23.

Adding to 12500444120 its reverse (2144400521), we get a palindrome (14644844641).

The spelling of 12500444120 in words is "twelve billion, five hundred million, four hundred forty-four thousand, one hundred twenty".

Divisors: 1 2 4 5 8 10 20 40 312511103 625022206 1250044412 1562555515 2500088824 3125111030 6250222060 12500444120