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20432141405 = 513224180049
BaseRepresentation
bin10011000001110110…
…011011110001011101
31221201221200022210222
4103001312123301131
5313321112011110
613215243411125
71322220223244
oct230166336135
957657608728
1020432141405
118735458285
123b62823aa5
131c08090b00
14dbb85595b
157e8b7cc55
hex4c1d9bc5d

20432141405 has 12 divisors (see below), whose sum is σ = 26549694900. Its totient is φ = 15088349952.

The previous prime is 20432141399. The next prime is 20432141423. The reversal of 20432141405 is 50414123402.

It can be written as a sum of positive squares in 6 ways, for example, as 545783044 + 19886358361 = 23362^2 + 141019^2 .

It is not a de Polignac number, because 20432141405 - 216 = 20432075869 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12089180 + ... + 12090869.

It is an arithmetic number, because the mean of its divisors is an integer number (2212474575).

Almost surely, 220432141405 is an apocalyptic number.

It is an amenable number.

20432141405 is a deficient number, since it is larger than the sum of its proper divisors (6117553495).

20432141405 is a wasteful number, since it uses less digits than its factorization.

20432141405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24180080 (or 24180067 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 20432141405 its reverse (50414123402), we get a palindrome (70846264807).

The spelling of 20432141405 in words is "twenty billion, four hundred thirty-two million, one hundred forty-one thousand, four hundred five".

Divisors: 1 5 13 65 169 845 24180049 120900245 314340637 1571703185 4086428281 20432141405