12154030540 has 48 divisors (see below), whose sum is σ = 25695581184. Its totient is φ = 4828896000.

The previous prime is 12154030519. The next prime is 12154030571. The reversal of 12154030540 is 4503045121.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4165162 + ... + 4168078.

It is an arithmetic number, because the mean of its divisors is an integer number (535324608).

Almost surely, 2^12154030540 is an apocalyptic number.

12154030540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12154030540 is an abundant number, since it is smaller than the sum of its proper divisors (13541550644).

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

12154030540 is a wasteful number, since it uses less digits than its factorization.

12154030540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4258 (or 4256 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 12154030540 its reverse (4503045121), we get a palindrome (16657075661).

The spelling of 12154030540 in words is "twelve billion, one hundred fifty-four million, thirty thousand, five hundred forty".