12578415718 has 8 divisors (see below), whose sum is σ = 20582862120. Its totient is φ = 5717461680.

The previous prime is 12578415713. The next prime is 12578415727. The reversal of 12578415718 is 81751487521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12578415713) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 285873063 + ... + 285873106.

It is an arithmetic number, because the mean of its divisors is an integer number (2572857765).

Almost surely, 2^12578415718 is an apocalyptic number.

12578415718 is a deficient number, since it is larger than the sum of its proper divisors (8004446402).

12578415718 is a wasteful number, since it uses less digits than its factorization.

12578415718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571746182.

The product of its digits is 627200, while the sum is 49.

The spelling of 12578415718 in words is "twelve billion, five hundred seventy-eight million, four hundred fifteen thousand, seven hundred eighteen".