12154452240 has 320 divisors, whose sum is σ = 44286308352. Its totient is φ = 2699827200.

The previous prime is 12154452239. The next prime is 12154452251. The reversal of 12154452240 is 4225445121.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 12154452198 and 12154452207.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 22466370 + ... + 22466910.

Almost surely, 2^12154452240 is an apocalyptic number.

12154452240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12154452240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22143154176).

12154452240 is an abundant number, since it is smaller than the sum of its proper divisors (32131856112).

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

12154452240 is a wasteful number, since it uses less digits than its factorization.

12154452240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 918 (or 912 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 30.

Adding to 12154452240 its reverse (4225445121), we get a palindrome (16379897361).

The spelling of 12154452240 in words is "twelve billion, one hundred fifty-four million, four hundred fifty-two thousand, two hundred forty".