12154440620 has 48 divisors (see below), whose sum is σ = 30438955008. Its totient is φ = 3986051520.

The previous prime is 12154440577. The next prime is 12154440629. The reversal of 12154440620 is 2604445121.

12154440620 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (12154440629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1884116 + ... + 1890555.

It is an arithmetic number, because the mean of its divisors is an integer number (634144896).

Almost surely, 2^12154440620 is an apocalyptic number.

12154440620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12154440620 is an abundant number, since it is smaller than the sum of its proper divisors (18284514388).

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

12154440620 is a wasteful number, since it uses less digits than its factorization.

12154440620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3774710 (or 3774708 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

Adding to 12154440620 its reverse (2604445121), we get a palindrome (14758885741).

The spelling of 12154440620 in words is "twelve billion, one hundred fifty-four million, four hundred forty thousand, six hundred twenty".