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6469793906688 = 2153473147239
BaseRepresentation
bin101111000100101110111…
…0001001000000000000000
3211220111200001122201220000
41132021131301020000000
51322000114220003223
621432103212520000
71235266344555540
oct136113561100000
924814601581800
106469793906688
112074907aa1972
12885a80a80000
1337c139506b78
141851d547b320
15b3462d32543
hex5e25dc48000

6469793906688 has 1280 divisors, whose sum is σ = 23385740083200. Its totient is φ = 1743496151040.

The previous prime is 6469793906677. The next prime is 6469793906689. The reversal of 6469793906688 is 8866093979646.

6469793906688 is a `hidden beast` number, since 6 + 4 + 6 + 97 + 9 + 390 + 66 + 88 = 666.

It is a super-2 number, since 2×64697939066882 (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is not an unprimeable number, because it can be changed into a prime (6469793906689) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 27070267273 + ... + 27070267511.

It is an arithmetic number, because the mean of its divisors is an integer number (18270109440).

Almost surely, 26469793906688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6469793906688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11692870041600).

6469793906688 is an abundant number, since it is smaller than the sum of its proper divisors (16915946176512).

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

6469793906688 is an equidigital number, since it uses as much as digits as its factorization.

6469793906688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366 (or 329 counting only the distinct ones).

The product of its (nonzero) digits is 5079158784, while the sum is 81.

The spelling of 6469793906688 in words is "six trillion, four hundred sixty-nine billion, seven hundred ninety-three million, nine hundred six thousand, six hundred eighty-eight".