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83760448421 = 1323280135279
BaseRepresentation
bin100111000000010000…
…0110000001110100101
322000012102001122110102
41032000200300032211
52333020133322141
6102251245033445
76023443031036
oct1160040601645
9260172048412
1083760448421
11325826536a1
1214297255885
137b8b231820
1440a8372a8d
1522a36c599b
hex13808303a5

83760448421 has 8 divisors (see below), whose sum is σ = 94125454080. Its totient is φ = 73955713392.

The previous prime is 83760448397. The next prime is 83760448427. The reversal of 83760448421 is 12484406738.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 83760448421 - 214 = 83760432037 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83760448427) 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, 140067341 + ... + 140067938.

It is an arithmetic number, because the mean of its divisors is an integer number (11765681760).

Almost surely, 283760448421 is an apocalyptic number.

It is an amenable number.

83760448421 is a deficient number, since it is larger than the sum of its proper divisors (10365005659).

83760448421 is a wasteful number, since it uses less digits than its factorization.

83760448421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280135315.

The product of its (nonzero) digits is 1032192, while the sum is 47.

The spelling of 83760448421 in words is "eighty-three billion, seven hundred sixty million, four hundred forty-eight thousand, four hundred twenty-one".

Divisors: 1 13 23 299 280135279 3641758627 6443111417 83760448421