12154402143040 has 56 divisors (see below), whose sum is σ = 28943579671272. Its totient is φ = 4861608069120.

The previous prime is 12154402143007. The next prime is 12154402143041. The reversal of 12154402143040 is 4034120445121.

It is a happy number.

12154402143040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 3128030853376 + 9026371289664 = 1768624^2 + 3004392^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12154402142993 and 12154402143011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12154402143041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9888970 + ... + 11049910.

It is an arithmetic number, because the mean of its divisors is an integer number (516849636987).

Almost surely, 2^{12154402143040} is an apocalyptic number.

12154402143040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12154402143040 is an abundant number, since it is smaller than the sum of its proper divisors (16789177528232).

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

12154402143040 is a wasteful number, since it uses less digits than its factorization.

12154402143040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1193675 (or 1193665 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 31.

Adding to 12154402143040 its reverse (4034120445121), we get a palindrome (16188522588161).

The spelling of 12154402143040 in words is "twelve trillion, one hundred fifty-four billion, four hundred two million, one hundred forty-three thousand, forty".