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20623643207 = 83277789477
BaseRepresentation
bin10011001101010000…
…111101001001000111
31222020022000121220022
4103031100331021013
5314214123040312
613250244125355
71330034034446
oct231520751107
958208017808
1020623643207
118823566432
123bb699685b
131c38960c9b
14dd9064d5d
1580a8a9172
hex4cd43d247

20623643207 has 8 divisors (see below), whose sum is σ = 20879870256. Its totient is φ = 20367600832.

The previous prime is 20623643153. The next prime is 20623643321. The reversal of 20623643207 is 70234632602.

It is a happy number.

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 20623643207 - 218 = 20623381063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20623643707) 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 7 ways as a sum of consecutive naturals, for example, 185753 + ... + 275229.

It is an arithmetic number, because the mean of its divisors is an integer number (2609983782).

Almost surely, 220623643207 is an apocalyptic number.

20623643207 is a deficient number, since it is larger than the sum of its proper divisors (256227049).

20623643207 is an equidigital number, since it uses as much as digits as its factorization.

20623643207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92337.

The product of its (nonzero) digits is 72576, while the sum is 35.

The spelling of 20623643207 in words is "twenty billion, six hundred twenty-three million, six hundred forty-three thousand, two hundred seven".

Divisors: 1 83 2777 89477 230491 7426591 248477629 20623643207