12446778910 has 16 divisors (see below), whose sum is σ = 23009721696. Its totient is φ = 4844151648.

The previous prime is 12446778899. The next prime is 12446778919. The reversal of 12446778910 is 1987764421.

12446778910 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12446778919) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16819602 + ... + 16820341.

It is an arithmetic number, because the mean of its divisors is an integer number (1438107606).

Almost surely, 2^12446778910 is an apocalyptic number.

12446778910 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12446778910 is a deficient number, since it is larger than the sum of its proper divisors (10562942786).

12446778910 is a wasteful number, since it uses less digits than its factorization.

12446778910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33639987.

The product of its (nonzero) digits is 677376, while the sum is 49.

The spelling of 12446778910 in words is "twelve billion, four hundred forty-six million, seven hundred seventy-eight thousand, nine hundred ten".