12579577878 has 64 divisors (see below), whose sum is σ = 29347702272. Its totient is φ = 3520108800.

The previous prime is 12579577859. The next prime is 12579577883. The reversal of 12579577878 is 87877597521.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1333125 + ... + 1342527.

It is an arithmetic number, because the mean of its divisors is an integer number (458557848).

Almost surely, 2^12579577878 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12579577878, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14673851136).

12579577878 is an abundant number, since it is smaller than the sum of its proper divisors (16768124394).

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

12579577878 is a wasteful number, since it uses less digits than its factorization.

12579577878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10069.

The product of its digits is 69148800, while the sum is 66.

The spelling of 12579577878 in words is "twelve billion, five hundred seventy-nine million, five hundred seventy-seven thousand, eight hundred seventy-eight".