12446157578 has 16 divisors (see below), whose sum is σ = 19621103040. Its totient is φ = 5909683296.

The previous prime is 12446157571. The next prime is 12446157593. The reversal of 12446157578 is 87575164421.

12446157578 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12446157571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 966875 + ... + 979662.

It is an arithmetic number, because the mean of its divisors is an integer number (1226318940).

Almost surely, 2^12446157578 is an apocalyptic number.

12446157578 is a deficient number, since it is larger than the sum of its proper divisors (7174945462).

12446157578 is a wasteful number, since it uses less digits than its factorization.

12446157578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1946701.

The product of its digits is 1881600, while the sum is 50.

The spelling of 12446157578 in words is "twelve billion, four hundred forty-six million, one hundred fifty-seven thousand, five hundred seventy-eight".