12578033448 has 24 divisors (see below), whose sum is σ = 34065507450. Its totient is φ = 4192677792.

The previous prime is 12578033443. The next prime is 12578033449. The reversal of 12578033448 is 84433087521.

12578033448 is a `hidden beast` number, since 1 + 2 + 578 + 0 + 3 + 34 + 48 = 666.

It can be written as a sum of positive squares in only one way, i.e., 8507848644 + 4070184804 = 92238^2 + 63798^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (12578033443) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 87347383 + ... + 87347526.

Almost surely, 2^12578033448 is an apocalyptic number.

12578033448 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

12578033448 is an abundant number, since it is smaller than the sum of its proper divisors (21487474002).

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

12578033448 is a wasteful number, since it uses less digits than its factorization.

12578033448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174694921 (or 174694914 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 45.

The spelling of 12578033448 in words is "twelve billion, five hundred seventy-eight million, thirty-three thousand, four hundred forty-eight".