12023617520 has 40 divisors (see below), whose sum is σ = 28077027360. Its totient is φ = 4788437760.

The previous prime is 12023617519. The next prime is 12023617583. The reversal of 12023617520 is 2571632021.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 309836 + ... + 346475.

It is an arithmetic number, because the mean of its divisors is an integer number (701925684).

Almost surely, 2^12023617520 is an apocalyptic number.

12023617520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12023617520 is an abundant number, since it is smaller than the sum of its proper divisors (16053409840).

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

12023617520 is a wasteful number, since it uses less digits than its factorization.

12023617520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656553 (or 656547 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 29.

The spelling of 12023617520 in words is "twelve billion, twenty-three million, six hundred seventeen thousand, five hundred twenty".