12819351249 has 16 divisors (see below), whose sum is σ = 19023681600. Its totient is φ = 8531811648.

The previous prime is 12819351241. The next prime is 12819351271. The reversal of 12819351249 is 94215391821.

12819351249 is a `hidden beast` number, since 1 + 2 + 8 + 1 + 93 + 512 + 49 = 666.

It is not a de Polignac number, because 12819351249 - 2³ = 12819351241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12819351241) 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 15 ways as a sum of consecutive naturals, for example, 384319 + ... + 416340.

It is an arithmetic number, because the mean of its divisors is an integer number (1188980100).

Almost surely, 2^12819351249 is an apocalyptic number.

It is an amenable number.

12819351249 is a deficient number, since it is larger than the sum of its proper divisors (6204330351).

12819351249 is an equidigital number, since it uses as much as digits as its factorization.

12819351249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 801261 (or 801255 counting only the distinct ones).

The product of its digits is 155520, while the sum is 45.

The spelling of 12819351249 in words is "twelve billion, eight hundred nineteen million, three hundred fifty-one thousand, two hundred forty-nine".