1243513113844 has 12 divisors (see below), whose sum is σ = 2188305201600. Its totient is φ = 618283056248.

The previous prime is 1243513113827. The next prime is 1243513113889. The reversal of 1243513113844 is 4483113153421.

It is a junction number, because it is equal to n+sod(n) for n = 1243513113797 and 1243513113806.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 868374364 + ... + 868375795.

It is an arithmetic number, because the mean of its divisors is an integer number (182358766800).

Almost surely, 2^{1243513113844} is an apocalyptic number.

It is an amenable number.

1243513113844 is a deficient number, since it is larger than the sum of its proper divisors (944792087756).

1243513113844 is a wasteful number, since it uses less digits than its factorization.

1243513113844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1736750342 (or 1736750340 counting only the distinct ones).

The product of its digits is 138240, while the sum is 40.

The spelling of 1243513113844 in words is "one trillion, two hundred forty-three billion, five hundred thirteen million, one hundred thirteen thousand, eight hundred forty-four".