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20001250213 = 72857321459
BaseRepresentation
bin10010101000001010…
…101101101110100101
31220121220212210012221
4102220022231232211
5311430310001323
613104412112341
71305435551560
oct225012555645
956556783187
1020001250213
11853420335a
123a624656b1
131b69a249c9
14d7a52d4d7
157c0e1655d
hex4a82adba5

20001250213 has 4 divisors (see below), whose sum is σ = 22858571680. Its totient is φ = 17143928748.

The previous prime is 20001250151. The next prime is 20001250229. The reversal of 20001250213 is 31205210002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20001250213 - 213 = 20001242021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20001250273) 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 3 ways as a sum of consecutive naturals, for example, 1428660723 + ... + 1428660736.

It is an arithmetic number, because the mean of its divisors is an integer number (5714642920).

Almost surely, 220001250213 is an apocalyptic number.

It is an amenable number.

20001250213 is a deficient number, since it is larger than the sum of its proper divisors (2857321467).

20001250213 is an equidigital number, since it uses as much as digits as its factorization.

20001250213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2857321466.

The product of its (nonzero) digits is 120, while the sum is 16.

Adding to 20001250213 its reverse (31205210002), we get a palindrome (51206460215).

The spelling of 20001250213 in words is "twenty billion, one million, two hundred fifty thousand, two hundred thirteen".

Divisors: 1 7 2857321459 20001250213