12519443820 has 48 divisors (see below), whose sum is σ = 37750940640. Its totient is φ = 3081709056.

The previous prime is 12519443819. The next prime is 12519443873. The reversal of 12519443820 is 2834491521.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

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, 8024505 + ... + 8026064.

It is an arithmetic number, because the mean of its divisors is an integer number (786477930).

Almost surely, 2^12519443820 is an apocalyptic number.

12519443820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12519443820 is an abundant number, since it is smaller than the sum of its proper divisors (25231496820).

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

12519443820 is a wasteful number, since it uses less digits than its factorization.

12519443820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16050594 (or 16050592 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 39.

The spelling of 12519443820 in words is "twelve billion, five hundred nineteen million, four hundred forty-three thousand, eight hundred twenty".