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69668444380 = 22513567256757
BaseRepresentation
bin100000011100010010…
…0000001100011011100
320122211022110200001211
41000320210001203130
52120140110210010
652001044314204
75014310002123
oct1007044014334
9218738420054
1069668444380
1127601025467
12116039a2964
13675384b7b2
14352c98aaba
151c2b46c08a
hex10389018dc

69668444380 has 24 divisors (see below), whose sum is σ = 146315086848. Its totient is φ = 27865215168.

The previous prime is 69668444357. The next prime is 69668444381. The reversal of 69668444380 is 8344486696.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69668444381) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 142962 + ... + 399718.

It is an arithmetic number, because the mean of its divisors is an integer number (6096461952).

Almost surely, 269668444380 is an apocalyptic number.

It is an amenable number.

69668444380 is an abundant number, since it is smaller than the sum of its proper divisors (76646642468).

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

69668444380 is a wasteful number, since it uses less digits than its factorization.

69668444380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270333 (or 270331 counting only the distinct ones).

The product of its (nonzero) digits is 23887872, while the sum is 58.

The spelling of 69668444380 in words is "sixty-nine billion, six hundred sixty-eight million, four hundred forty-four thousand, three hundred eighty".

Divisors: 1 2 4 5 10 20 13567 27134 54268 67835 135670 256757 271340 513514 1027028 1283785 2567570 5135140 3483422219 6966844438 13933688876 17417111095 34834222190 69668444380