12665496508560 has 640 divisors, whose sum is σ = 50427808604160. Its totient is φ = 2861971605504.

The previous prime is 12665496508559. The next prime is 12665496508583. The reversal of 12665496508560 is 6580569456621.

12665496508560 is a `hidden beast` number, since 1 + 2 + 6 + 6 + 5 + 4 + 9 + 65 + 0 + 8 + 560 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 954655047 + ... + 954668313.

It is an arithmetic number, because the mean of its divisors is an integer number (78793450944).

Almost surely, 2^{12665496508560} is an apocalyptic number.

12665496508560 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 12665496508560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25213904302080).

12665496508560 is an abundant number, since it is smaller than the sum of its proper divisors (37762312095600).

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

12665496508560 is a wasteful number, since it uses less digits than its factorization.

12665496508560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14012 (or 14000 counting only the distinct ones).

The product of its (nonzero) digits is 93312000, while the sum is 63.

The spelling of 12665496508560 in words is "twelve trillion, six hundred sixty-five billion, four hundred ninety-six million, five hundred eight thousand, five hundred sixty".