12181542030 has 96 divisors (see below), whose sum is σ = 36315062784. Its totient is φ = 2775238848.

The previous prime is 12181542013. The next prime is 12181542031. The reversal of 12181542030 is 3024518121.

12181542030 is a `hidden beast` number, since 12 + 1 + 81 + 542 + 0 + 30 = 666.

It is a super-3 number, since 3×12181542030³ (a number of 31 digits) contains 333 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12181541985 and 12181542003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12181542031) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 161919 + ... + 224901.

It is an arithmetic number, because the mean of its divisors is an integer number (378281904).

Almost surely, 2^12181542030 is an apocalyptic number.

12181542030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12181542030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18157531392).

12181542030 is an abundant number, since it is smaller than the sum of its proper divisors (24133520754).

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

12181542030 is a wasteful number, since it uses less digits than its factorization.

12181542030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63310 (or 63307 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The spelling of 12181542030 in words is "twelve billion, one hundred eighty-one million, five hundred forty-two thousand, thirty".