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20500104763 = 79917328289
BaseRepresentation
bin10011000101111001…
…101100011000111011
31221220200120020000101
4103011321230120323
5313441011323023
613230112220231
71324004005165
oct230571543073
957820506011
1020500104763
11876a858146
123b8153a677
131c19198608
14dc68a7935
157eeb051ad
hex4c5e6c63b

20500104763 has 8 divisors (see below), whose sum is σ = 20762596800. Its totient is φ = 20237687808.

The previous prime is 20500104761. The next prime is 20500104787. The reversal of 20500104763 is 36740100502.

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 20500104763 - 21 = 20500104761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20500104761) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 710523 + ... + 738811.

It is an arithmetic number, because the mean of its divisors is an integer number (2595324600).

Almost surely, 220500104763 is an apocalyptic number.

20500104763 is a deficient number, since it is larger than the sum of its proper divisors (262492037).

20500104763 is an equidigital number, since it uses as much as digits as its factorization.

20500104763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37541.

The product of its (nonzero) digits is 5040, while the sum is 28.

The spelling of 20500104763 in words is "twenty billion, five hundred million, one hundred four thousand, seven hundred sixty-three".

Divisors: 1 79 9173 28289 724667 2234831 259494997 20500104763