12154577545120 has 24 divisors (see below), whose sum is σ = 28715189450724. Its totient is φ = 4861831017984.

The previous prime is 12154577545109. The next prime is 12154577545129. The reversal of 12154577545120 is 2154577545121.

It can be written as a sum of positive squares in 2 ways, for example, as 11392218055696 + 762359489424 = 3375236^2 + 873132^2 .

It is not an unprimeable number, because it can be changed into a prime (12154577545129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37983054669 + ... + 37983054988.

Almost surely, 2^{12154577545120} is an apocalyptic number.

12154577545120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12154577545120 is an abundant number, since it is smaller than the sum of its proper divisors (16560611905604).

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

12154577545120 is an equidigital number, since it uses as much as digits as its factorization.

12154577545120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75966109672 (or 75966109664 counting only the distinct ones).

The product of its (nonzero) digits is 1960000, while the sum is 49.

Subtracting from 12154577545120 its reverse (2154577545121), we obtain a palindrome (9999999999999).

The spelling of 12154577545120 in words is "twelve trillion, one hundred fifty-four billion, five hundred seventy-seven million, five hundred forty-five thousand, one hundred twenty".