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20041015451 = 531423265729
BaseRepresentation
bin10010101010100010…
…011010000010011011
31220201200201001212112
4102222202122002123
5312020444443301
613112352302535
71306430551322
oct225242320233
956650631775
1020041015451
1185546a3596
123a73841a4b
131b75038732
14d819210b9
157c466d9bb
hex4aa89a09b

20041015451 has 8 divisors (see below), whose sum is σ = 20433574080. Its totient is φ = 19648991232.

The previous prime is 20041015427. The next prime is 20041015469. The reversal of 20041015451 is 15451014002.

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 20041015451 - 214 = 20040999067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20041015051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57446 + ... + 208283.

It is an arithmetic number, because the mean of its divisors is an integer number (2554196760).

Almost surely, 220041015451 is an apocalyptic number.

20041015451 is a deficient number, since it is larger than the sum of its proper divisors (392558629).

20041015451 is a wasteful number, since it uses less digits than its factorization.

20041015451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267205.

The product of its (nonzero) digits is 800, while the sum is 23.

Adding to 20041015451 its reverse (15451014002), we get a palindrome (35492029453).

The spelling of 20041015451 in words is "twenty billion, forty-one million, fifteen thousand, four hundred fifty-one".

Divisors: 1 53 1423 75419 265729 14083637 378132367 20041015451