12585540378 has 32 divisors (see below), whose sum is σ = 26995809600. Its totient is φ = 3899390976.

The previous prime is 12585540371. The next prime is 12585540389. The reversal of 12585540378 is 87304558521.

It is not an unprimeable number, because it can be changed into a prime (12585540371) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1035463 + ... + 1047546.

It is an arithmetic number, because the mean of its divisors is an integer number (843619050).

Almost surely, 2^12585540378 is an apocalyptic number.

12585540378 is an abundant number, since it is smaller than the sum of its proper divisors (14410269222).

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

12585540378 is a wasteful number, since it uses less digits than its factorization.

12585540378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2083086.

The product of its (nonzero) digits is 1344000, while the sum is 48.

The spelling of 12585540378 in words is "twelve billion, five hundred eighty-five million, five hundred forty thousand, three hundred seventy-eight".