12329755520 has 128 divisors (see below), whose sum is σ = 29891916000. Its totient is φ = 4862771200.

The previous prime is 12329755517. The next prime is 12329755523. The reversal of 12329755520 is 2555792321.

It is an interprime number because it is at equal distance from previous prime (12329755517) and next prime (12329755523).

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12329755523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27460256 + ... + 27460704.

Almost surely, 2^12329755520 is an apocalyptic number.

12329755520 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 12329755520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14945958000).

12329755520 is an abundant number, since it is smaller than the sum of its proper divisors (17562160480).

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

12329755520 is a wasteful number, since it uses less digits than its factorization.

12329755520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 976 (or 964 counting only the distinct ones).

The product of its (nonzero) digits is 189000, while the sum is 41.

The spelling of 12329755520 in words is "twelve billion, three hundred twenty-nine million, seven hundred fifty-five thousand, five hundred twenty".