12134285520 has 240 divisors, whose sum is σ = 43913314368. Its totient is φ = 2763694080.

The previous prime is 12134285509. The next prime is 12134285521. The reversal of 12134285520 is 2558243121.

It is a tau number, because it is divible by the number of its divisors (240).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12134285521) 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, 3608640 + ... + 3612000.

Almost surely, 2^12134285520 is an apocalyptic number.

12134285520 is a gapful number since it is divisible by the number (10) 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 12134285520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21956657184).

12134285520 is an abundant number, since it is smaller than the sum of its proper divisors (31779028848).

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

12134285520 is a wasteful number, since it uses less digits than its factorization.

12134285520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3698 (or 3685 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 33.

The spelling of 12134285520 in words is "twelve billion, one hundred thirty-four million, two hundred eighty-five thousand, five hundred twenty".