12478089945 has 32 divisors (see below), whose sum is σ = 20316852864. Its totient is φ = 6538688000.

The previous prime is 12478089931. The next prime is 12478089971. The reversal of 12478089945 is 54998087421.

12478089945 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12478089945 - 2⁷ = 12478089817 is a prime.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 167029 + ... + 229901.

It is an arithmetic number, because the mean of its divisors is an integer number (634901652).

Almost surely, 2^12478089945 is an apocalyptic number.

12478089945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12478089945 is a deficient number, since it is larger than the sum of its proper divisors (7838762919).

12478089945 is a wasteful number, since it uses less digits than its factorization.

12478089945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63113.

The product of its (nonzero) digits is 5806080, while the sum is 57.

The spelling of 12478089945 in words is "twelve billion, four hundred seventy-eight million, eighty-nine thousand, nine hundred forty-five".