12381720496 has 10 divisors (see below), whose sum is σ = 23989583492. Its totient is φ = 6190860240.

The previous prime is 12381720493. The next prime is 12381720497. The reversal of 12381720496 is 69402718321.

It is not an unprimeable number, because it can be changed into a prime (12381720493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 386928750 + ... + 386928781.

Almost surely, 2^12381720496 is an apocalyptic number.

12381720496 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12381720496 is a deficient number, since it is larger than the sum of its proper divisors (11607862996).

12381720496 is an equidigital number, since it uses as much as digits as its factorization.

12381720496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 773857539 (or 773857533 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 43.

The spelling of 12381720496 in words is "twelve billion, three hundred eighty-one million, seven hundred twenty thousand, four hundred ninety-six".