12115145322544 has 40 divisors (see below), whose sum is σ = 25611667034112. Its totient is φ = 5505883091520.

The previous prime is 12115145322509. The next prime is 12115145322583. The reversal of 12115145322544 is 44522354151121.

It is a junction number, because it is equal to n+sod(n) for n = 12115145322497 and 12115145322506.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5285884 + ... + 7222939.

Almost surely, 2^{12115145322544} is an apocalyptic number.

It is an amenable number.

12115145322544 is an abundant number, since it is smaller than the sum of its proper divisors (13496521711568).

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

12115145322544 is a wasteful number, since it uses less digits than its factorization.

12115145322544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12514345 (or 12514339 counting only the distinct ones).

The product of its digits is 192000, while the sum is 40.

Adding to 12115145322544 its reverse (44522354151121), we get a palindrome (56637499473665).

The spelling of 12115145322544 in words is "twelve trillion, one hundred fifteen billion, one hundred forty-five million, three hundred twenty-two thousand, five hundred forty-four".