12154324040 has 32 divisors (see below), whose sum is σ = 27598131000. Its totient is φ = 4817124864.

The previous prime is 12154324031. The next prime is 12154324081. The reversal of 12154324040 is 4042345121.

It can be written as a sum of positive squares in 4 ways, for example, as 10783991716 + 1370332324 = 103846^2 + 37018^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1389485 + ... + 1398204.

Almost surely, 2^12154324040 is an apocalyptic number.

12154324040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12154324040 is an abundant number, since it is smaller than the sum of its proper divisors (15443806960).

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

12154324040 is a wasteful number, since it uses less digits than its factorization.

12154324040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2787809 (or 2787805 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 12154324040 its reverse (4042345121), we get a palindrome (16196669161).

The spelling of 12154324040 in words is "twelve billion, one hundred fifty-four million, three hundred twenty-four thousand, forty".