1312543678858 has 8 divisors (see below), whose sum is σ = 1968827228928. Its totient is φ = 656267935884.

The previous prime is 1312543678847. The next prime is 1312543678889. The reversal of 1312543678858 is 8588763452131.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 1312543678796 and 1312543678805.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1511616 + ... + 2215867.

It is an arithmetic number, because the mean of its divisors is an integer number (246103403616).

Almost surely, 2^{1312543678858} is an apocalyptic number.

1312543678858 is a deficient number, since it is larger than the sum of its proper divisors (656283550070).

1312543678858 is a wasteful number, since it uses less digits than its factorization.

1312543678858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3903548.

The product of its digits is 38707200, while the sum is 61.

The spelling of 1312543678858 in words is "one trillion, three hundred twelve billion, five hundred forty-three million, six hundred seventy-eight thousand, eight hundred fifty-eight".