12550217016500 has 96 divisors (see below), whose sum is σ = 28283899338240. Its totient is φ = 4861258416000.

The previous prime is 12550217016457. The next prime is 12550217016523. The reversal of 12550217016500 is 561071205521.

It is a super-2 number, since 2×12550217016500² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2295941 + ... + 5511059.

It is an arithmetic number, because the mean of its divisors is an integer number (294623951440).

Almost surely, 2^{12550217016500} is an apocalyptic number.

12550217016500 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 12550217016500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14141949669120).

12550217016500 is an abundant number, since it is smaller than the sum of its proper divisors (15733682321740).

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

12550217016500 is a wasteful number, since it uses less digits than its factorization.

12550217016500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3215386 (or 3215374 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 35.

The spelling of 12550217016500 in words is "twelve trillion, five hundred fifty billion, two hundred seventeen million, sixteen thousand, five hundred".