12924346578 has 64 divisors (see below), whose sum is σ = 30429084672. Its totient is φ = 3607894080.

The previous prime is 12924346529. The next prime is 12924346597. The reversal of 12924346578 is 87564342921.

It is a self number, because there is not a number n which added to its sum of digits gives 12924346578.

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, 416601 + ... + 446547.

It is an arithmetic number, because the mean of its divisors is an integer number (475454448).

Almost surely, 2^12924346578 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12924346578, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15214542336).

12924346578 is an abundant number, since it is smaller than the sum of its proper divisors (17504738094).

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

12924346578 is a wasteful number, since it uses less digits than its factorization.

12924346578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30479.

The product of its digits is 2903040, while the sum is 51.

The spelling of 12924346578 in words is "twelve billion, nine hundred twenty-four million, three hundred forty-six thousand, five hundred seventy-eight".