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20010323005 = 5191091932431
BaseRepresentation
bin10010101000101101…
…010100110000111101
31220122112221201202021
4102220231110300331
5311440120314010
613105334400141
71305605640061
oct225055246075
956575851667
1020010323005
11853933a932
123a65500051
131b6b88051a
14d7b811aa1
157c1b098da
hex4a8b54c3d

20010323005 has 16 divisors (see below), whose sum is σ = 25508102400. Its totient is φ = 15026575680.

The previous prime is 20010322903. The next prime is 20010323009. The reversal of 20010323005 is 50032301002.

It is not a de Polignac number, because 20010323005 - 27 = 20010322877 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20010323005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20010323009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 955861 + ... + 976570.

It is an arithmetic number, because the mean of its divisors is an integer number (1594256400).

Almost surely, 220010323005 is an apocalyptic number.

It is an amenable number.

20010323005 is a deficient number, since it is larger than the sum of its proper divisors (5497779395).

20010323005 is a wasteful number, since it uses less digits than its factorization.

20010323005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1932564.

The product of its (nonzero) digits is 180, while the sum is 16.

Adding to 20010323005 its reverse (50032301002), we get a palindrome (70042624007).

The spelling of 20010323005 in words is "twenty billion, ten million, three hundred twenty-three thousand, five".

Divisors: 1 5 19 95 109 545 2071 10355 1932431 9662155 36716189 183580945 210634979 1053174895 4002064601 20010323005