12644214000 has 160 divisors (see below), whose sum is σ = 44471082240. Its totient is φ = 3065248000.

The previous prime is 12644213999. The next prime is 12644214041. The reversal of 12644214000 is 41244621.

It is a happy number.

It is a super-2 number, since 2×12644214000² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 29790 + ... + 161789.

It is an arithmetic number, because the mean of its divisors is an integer number (277944264).

Almost surely, 2^12644214000 is an apocalyptic number.

12644214000 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 12644214000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22235541120).

12644214000 is an abundant number, since it is smaller than the sum of its proper divisors (31826868240).

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

12644214000 is a wasteful number, since it uses less digits than its factorization.

12644214000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191616 (or 191600 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 12644214000 its reverse (41244621), we get a palindrome (12685458621).

The spelling of 12644214000 in words is "twelve billion, six hundred forty-four million, two hundred fourteen thousand".