12154504530 has 128 divisors (see below), whose sum is σ = 34237002240. Its totient is φ = 2703605760.

The previous prime is 12154504517. The next prime is 12154504543. The reversal of 12154504530 is 3540545121.

It is an interprime number because it is at equal distance from previous prime (12154504517) and next prime (12154504543).

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

It is a Curzon number.

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, 3933226 + ... + 3936314.

It is an arithmetic number, because the mean of its divisors is an integer number (267476580).

Almost surely, 2^12154504530 is an apocalyptic number.

12154504530 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 12154504530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17118501120).

12154504530 is an abundant number, since it is smaller than the sum of its proper divisors (22082497710).

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

12154504530 is a wasteful number, since it uses less digits than its factorization.

12154504530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3604.

The product of its (nonzero) digits is 12000, while the sum is 30.

The spelling of 12154504530 in words is "twelve billion, one hundred fifty-four million, five hundred four thousand, five hundred thirty".