12320081952 has 96 divisors (see below), whose sum is σ = 32575213440. Its totient is φ = 4076974080.

The previous prime is 12320081929. The next prime is 12320081989. The reversal of 12320081952 is 25918002321.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×12320081952² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10156098 + ... + 10157310.

It is an arithmetic number, because the mean of its divisors is an integer number (339325140).

Almost surely, 2^12320081952 is an apocalyptic number.

12320081952 is a gapful number since it is divisible by the number (12) 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 12320081952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16287606720).

12320081952 is an abundant number, since it is smaller than the sum of its proper divisors (20255131488).

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

12320081952 is a wasteful number, since it uses less digits than its factorization.

12320081952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1906 (or 1898 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The spelling of 12320081952 in words is "twelve billion, three hundred twenty million, eighty-one thousand, nine hundred fifty-two".