12663523120 has 20 divisors (see below), whose sum is σ = 29442691440. Its totient is φ = 5065409216.

The previous prime is 12663523109. The next prime is 12663523121. The reversal of 12663523120 is 2132536621.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (12663523121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79146940 + ... + 79147099.

It is an arithmetic number, because the mean of its divisors is an integer number (1472134572).

Almost surely, 2^12663523120 is an apocalyptic number.

12663523120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12663523120 is an abundant number, since it is smaller than the sum of its proper divisors (16779168320).

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

12663523120 is a wasteful number, since it uses less digits than its factorization.

12663523120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158294052 (or 158294046 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

The spelling of 12663523120 in words is "twelve billion, six hundred sixty-three million, five hundred twenty-three thousand, one hundred twenty".