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20412304001 = 118189172709
BaseRepresentation
bin10011000000101010…
…110000101010000001
31221200120100111000022
4103000222300222001
5313301022212001
613213254303225
71321556502245
oct230052605201
957616314008
1020412304001
118725239131
123b58057b15
131c03c366bb
14db8d70425
157e706011b
hex4c0ab0a81

20412304001 has 4 divisors (see below), whose sum is σ = 20412594900. Its totient is φ = 20412013104.

The previous prime is 20412303997. The next prime is 20412304009. The reversal of 20412304001 is 10040321402.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 19926145600 + 486158401 = 141160^2 + 22049^2 .

It is a cyclic number.

It is not a de Polignac number, because 20412304001 - 22 = 20412303997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20412304009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31835 + ... + 204543.

It is an arithmetic number, because the mean of its divisors is an integer number (5103148725).

Almost surely, 220412304001 is an apocalyptic number.

It is an amenable number.

20412304001 is a deficient number, since it is larger than the sum of its proper divisors (290899).

20412304001 is a wasteful number, since it uses less digits than its factorization.

20412304001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290898.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 20412304001 its reverse (10040321402), we get a palindrome (30452625403).

The spelling of 20412304001 in words is "twenty billion, four hundred twelve million, three hundred four thousand, one".

Divisors: 1 118189 172709 20412304001