12784021250 has 320 divisors, whose sum is σ = 34122477312. Its totient is φ = 3456000000.

The previous prime is 12784021249. The next prime is 12784021307. The reversal of 12784021250 is 5212048721.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 21270950 + ... + 21271550.

Almost surely, 2^12784021250 is an apocalyptic number.

12784021250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12784021250 is an abundant number, since it is smaller than the sum of its proper divisors (21338456062).

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

12784021250 is a wasteful number, since it uses less digits than its factorization.

12784021250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 671 (or 656 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 32.

Adding to 12784021250 its reverse (5212048721), we get a palindrome (17996069971).

The spelling of 12784021250 in words is "twelve billion, seven hundred eighty-four million, twenty-one thousand, two hundred fifty".