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6343420545 = 32571117113953
BaseRepresentation
bin1011110100001100…
…01110101010000001
3121101002021011002200
411322012032222001
5100442403424140
62525241303413
7313124120310
oct57206165201
917332234080
106343420545
112765771820
121290494b69
137a128a2a7
14442686277
15271d72030
hex17a18ea81

6343420545 has 192 divisors, whose sum is σ = 14658568704. Its totient is φ = 2456616960.

The previous prime is 6343420543. The next prime is 6343420547. The reversal of 6343420545 is 5450243436.

6343420545 is a `hidden beast` number, since 63 + 4 + 34 + 20 + 545 = 666.

It is an interprime number because it is at equal distance from previous prime (6343420543) and next prime (6343420547).

It is not a de Polignac number, because 6343420545 - 21 = 6343420543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6343420543) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 6655789 + ... + 6656741.

It is an arithmetic number, because the mean of its divisors is an integer number (76346712).

Almost surely, 26343420545 is an apocalyptic number.

It is an amenable number.

6343420545 is an abundant number, since it is smaller than the sum of its proper divisors (8315148159).

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

6343420545 is a wasteful number, since it uses less digits than its factorization.

6343420545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1112 (or 1109 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 36.

The square root of 6343420545 is about 79645.5933809272. The cubic root of 6343420545 is about 1851.1481108067.

The spelling of 6343420545 in words is "six billion, three hundred forty-three million, four hundred twenty thousand, five hundred forty-five".