12578519716 has 27 divisors (see below), whose sum is σ = 25609469067. Its totient is φ = 5390121240.

The previous prime is 12578519671. The next prime is 12578519747. The reversal of 12578519716 is 61791587521.

The square root of 12578519716 is 112154.

It is a perfect power (a square), and thus also a powerful number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1566151 + ... + 1574161.

Almost surely, 2^12578519716 is an apocalyptic number.

12578519716 is the 112154-th square number.

It is an amenable number.

12578519716 is an abundant number, since it is smaller than the sum of its proper divisors (13030949351).

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

12578519716 is an frugal number, since it uses more digits than its factorization.

12578519716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16040 (or 8020 counting only the distinct ones).

The product of its digits is 1058400, while the sum is 52.

The spelling of 12578519716 in words is "twelve billion, five hundred seventy-eight million, five hundred nineteen thousand, seven hundred sixteen".