12151278511844 has 12 divisors (see below), whose sum is σ = 22515604301484. Its totient is φ = 5718248711424.

The previous prime is 12151278511837. The next prime is 12151278511849. The reversal of 12151278511844 is 44811587215121.

It can be written as a sum of positive squares in 2 ways, for example, as 5840380889344 + 6310897622500 = 2416688^2 + 2512150^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12151278511792 and 12151278511801.

It is not an unprimeable number, because it can be changed into a prime (12151278511849) 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, 89347636049 + ... + 89347636184.

It is an arithmetic number, because the mean of its divisors is an integer number (1876300358457).

Almost surely, 2^{12151278511844} is an apocalyptic number.

It is an amenable number.

12151278511844 is a deficient number, since it is larger than the sum of its proper divisors (10364325789640).

12151278511844 is a wasteful number, since it uses less digits than its factorization.

12151278511844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178695272254 (or 178695272252 counting only the distinct ones).

The product of its digits is 716800, while the sum is 50.

The spelling of 12151278511844 in words is "twelve trillion, one hundred fifty-one billion, two hundred seventy-eight million, five hundred eleven thousand, eight hundred forty-four".