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1284444421180 = 22564222221059
BaseRepresentation
bin10010101100001110110…
…110100111110000111100
311112210101010210011200021
4102230032312213300330
5132021020232434210
62422022101341524
7161540505303544
oct22541666476074
94483333704607
101284444421180
11455803432628
12188b25a078a4
139417943682b
144624b662324
1523628469bda
hex12b0eda7c3c

1284444421180 has 12 divisors (see below), whose sum is σ = 2697333284520. Its totient is φ = 513777768464.

The previous prime is 1284444421159. The next prime is 1284444421241. The reversal of 1284444421180 is 811244444821.

It is a happy number.

It is a super-2 number, since 2×12844444211802 (a number of 25 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 3 ways as a sum of consecutive naturals, for example, 32111110510 + ... + 32111110549.

It is an arithmetic number, because the mean of its divisors is an integer number (224777773710).

Almost surely, 21284444421180 is an apocalyptic number.

1284444421180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1284444421180 is an abundant number, since it is smaller than the sum of its proper divisors (1412888863340).

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

1284444421180 is a wasteful number, since it uses less digits than its factorization.

1284444421180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64222221068 (or 64222221066 counting only the distinct ones).

The product of its (nonzero) digits is 262144, while the sum is 43.

The spelling of 1284444421180 in words is "one trillion, two hundred eighty-four billion, four hundred forty-four million, four hundred twenty-one thousand, one hundred eighty".

Divisors: 1 2 4 5 10 20 64222221059 128444442118 256888884236 321111105295 642222210590 1284444421180