12030215545456 has 160 divisors (see below), whose sum is σ = 25473491556480. Its totient is φ = 5480772599808.

The previous prime is 12030215545441. The next prime is 12030215545487. The reversal of 12030215545456 is 65454551203021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1891837605 + ... + 1891843963.

It is an arithmetic number, because the mean of its divisors is an integer number (159209322228).

Almost surely, 2^{12030215545456} is an apocalyptic number.

12030215545456 is a gapful number since it is divisible by the number (16) 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 12030215545456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12736745778240).

12030215545456 is an abundant number, since it is smaller than the sum of its proper divisors (13443276011024).

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

12030215545456 is a wasteful number, since it uses less digits than its factorization.

12030215545456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7331 (or 7325 counting only the distinct ones).

The product of its (nonzero) digits is 720000, while the sum is 43.

Adding to 12030215545456 its reverse (65454551203021), we get a palindrome (77484766748477).

The spelling of 12030215545456 in words is "twelve trillion, thirty billion, two hundred fifteen million, five hundred forty-five thousand, four hundred fifty-six".