12030458538 has 96 divisors (see below), whose sum is σ = 29077792128. Its totient is φ = 3305971200.

The previous prime is 12030458519. The next prime is 12030458563. The reversal of 12030458538 is 83585403021.

It is a super-3 number, since 3×12030458538³ (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 = 12030458496 and 12030458505.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 848806 + ... + 862862.

It is an arithmetic number, because the mean of its divisors is an integer number (302893668).

Almost surely, 2^12030458538 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12030458538, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14538896064).

12030458538 is an abundant number, since it is smaller than the sum of its proper divisors (17047333590).

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

12030458538 is a wasteful number, since it uses less digits than its factorization.

12030458538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14188 (or 14181 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 39.

The spelling of 12030458538 in words is "twelve billion, thirty million, four hundred fifty-eight thousand, five hundred thirty-eight".