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12500430000 = 243542691549
BaseRepresentation
bin10111010010001010…
…10110110010110000
31012021011202122020220
423221011112302300
5201100102230000
65424223333040
7621525621222
oct135105266260
935234678226
1012500430000
115335192093
12250a451180
131242a3a556
14868286412
154d26711a0
hex2e9156cb0

12500430000 has 200 divisors, whose sum is σ = 40529214000. Its totient is φ = 3318912000.

The previous prime is 12500429959. The next prime is 12500430001. The reversal of 12500430000 is 3400521.

It is a tau number, because it is divible by the number of its divisors (200).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (12500430001) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 8069226 + ... + 8070774.

It is an arithmetic number, because the mean of its divisors is an integer number (202646070).

Almost surely, 212500430000 is an apocalyptic number.

12500430000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12500430000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20264607000).

12500430000 is an abundant number, since it is smaller than the sum of its proper divisors (28028784000).

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

12500430000 is a wasteful number, since it uses less digits than its factorization.

12500430000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1849 (or 1828 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

Adding to 12500430000 its reverse (3400521), we get a palindrome (12503830521).

The spelling of 12500430000 in words is "twelve billion, five hundred million, four hundred thirty thousand".