12387317363808 has 96 divisors (see below), whose sum is σ = 33405595614720. Its totient is φ = 4016298401280.

The previous prime is 12387317363807. The next prime is 12387317363821. The reversal of 12387317363808 is 80836371378321.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12387317363807) 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, 11308233 + ... + 12355191.

It is an arithmetic number, because the mean of its divisors is an integer number (347974954320).

Almost surely, 2^{12387317363808} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12387317363808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16702797807360).

12387317363808 is an abundant number, since it is smaller than the sum of its proper divisors (21018278250912).

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

12387317363808 is a wasteful number, since it uses less digits than its factorization.

12387317363808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1050340 (or 1050332 counting only the distinct ones).

The product of its (nonzero) digits is 24385536, while the sum is 60.

The spelling of 12387317363808 in words is "twelve trillion, three hundred eighty-seven billion, three hundred seventeen million, three hundred sixty-three thousand, eight hundred eight".