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12552320000 = 21054111783
BaseRepresentation
bin10111011000010110…
…10011010000000000
31012101210101220221202
423230023103100000
5201201343220000
65433315440332
7623025650063
oct135413232000
935353356852
1012552320000
115361503890
1225238b60a8
131250707cac
148711128da
154d6ec0dd5
hex2ec2d3400

12552320000 has 220 divisors, whose sum is σ = 34225119456. Its totient is φ = 4561920000.

The previous prime is 12552319933. The next prime is 12552320029. The reversal of 12552320000 is 2325521.

It is a tau number, because it is divible by the number of its divisors (220).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 7039109 + ... + 7040891.

Almost surely, 212552320000 is an apocalyptic number.

12552320000 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 12552320000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17112559728).

12552320000 is an abundant number, since it is smaller than the sum of its proper divisors (21672799456).

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

12552320000 is an equidigital number, since it uses as much as digits as its factorization.

12552320000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1834 (or 1801 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

Adding to 12552320000 its reverse (2325521), we get a palindrome (12554645521).

The spelling of 12552320000 in words is "twelve billion, five hundred fifty-two million, three hundred twenty thousand".