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17900001000001 = 55154332454407
BaseRepresentation
bin1000001000111101010110…
…01100110111101001000001
32100101020000211212010012001
410010132223030313221001
54321233200224000001
6102023051423304001
73525142466031511
oct404365314675101
970336024763161
1017900001000001
115781390a044aa
12201118214b001
139cac69500163
1445c51692b841
15210947cba001
hex1047ab337a41

17900001000001 has 4 divisors (see below), whose sum is σ = 17900034005952. Its totient is φ = 17899967994052.

The previous prime is 17900000999983. The next prime is 17900001000047. The reversal of 17900001000001 is 10000010000971.

It is a happy number.

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 17900001000001 - 223 = 17899992611393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (17900001000071) 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, 15675661 + ... + 16778746.

It is an arithmetic number, because the mean of its divisors is an integer number (4475008501488).

Almost surely, 217900001000001 is an apocalyptic number.

It is an amenable number.

17900001000001 is a deficient number, since it is larger than the sum of its proper divisors (33005951).

17900001000001 is an equidigital number, since it uses as much as digits as its factorization.

17900001000001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33005950.

The product of its (nonzero) digits is 63, while the sum is 19.

Adding to 17900001000001 its reverse (10000010000971), we get a palindrome (27900011000972).

The spelling of 17900001000001 in words is "seventeen trillion, nine hundred billion, one million, one", and thus it is an aban number.

Divisors: 1 551543 32454407 17900001000001