12798518050 has 12 divisors (see below), whose sum is σ = 23805243666. Its totient is φ = 5119407200.

The previous prime is 12798518023. The next prime is 12798518053. The reversal of 12798518050 is 5081589721.

It can be written as a sum of positive squares in 3 ways, for example, as 12338544241 + 459973809 = 111079^2 + 21447^2 .

It is not an unprimeable number, because it can be changed into a prime (12798518053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 127985131 + ... + 127985230.

Almost surely, 2^12798518050 is an apocalyptic number.

12798518050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12798518050 is a deficient number, since it is larger than the sum of its proper divisors (11006725616).

12798518050 is a wasteful number, since it uses less digits than its factorization.

12798518050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255970373 (or 255970368 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 46.

The spelling of 12798518050 in words is "twelve billion, seven hundred ninety-eight million, five hundred eighteen thousand, fifty".