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26317160917 is a prime number
BaseRepresentation
bin11000100000101000…
…000000000111010101
32111221002101021220121
4120200220000013111
5412344143122132
620031232031541
71621110114445
oct304050000725
974832337817
1026317160917
1110185395573
1251256925b1
13263539c588
1413b9294125
15a40652497
hex620a001d5

26317160917 has 2 divisors, whose sum is σ = 26317160918. Its totient is φ = 26317160916.

The previous prime is 26317160873. The next prime is 26317160921. The reversal of 26317160917 is 71906171362.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26283218641 + 33942276 = 162121^2 + 5826^2 .

It is a cyclic number.

It is not a de Polignac number, because 26317160917 - 223 = 26308772309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26315160917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13158580458 + 13158580459.

It is an arithmetic number, because the mean of its divisors is an integer number (13158580459).

Almost surely, 226317160917 is an apocalyptic number.

It is an amenable number.

26317160917 is a deficient number, since it is larger than the sum of its proper divisors (1).

26317160917 is an equidigital number, since it uses as much as digits as its factorization.

26317160917 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 95256, while the sum is 43.

The spelling of 26317160917 in words is "twenty-six billion, three hundred seventeen million, one hundred sixty thousand, nine hundred seventeen".