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26386841109 = 3192112193967
BaseRepresentation
bin11000100100110001…
…110011111000010101
32112002221111102011110
4120210301303320111
5413020012403414
620042201325233
71622614306626
oct304461637025
975087442143
1026386841109
1110210758302
125144a96819
132646958665
1413c4631a4d
15a46818459
hex624c73e15

26386841109 has 16 divisors (see below), whose sum is σ = 37209697280. Its totient is φ = 16586382960.

The previous prime is 26386841101. The next prime is 26386841119. The reversal of 26386841109 is 90114868362.

It is not a de Polignac number, because 26386841109 - 23 = 26386841101 is a prime.

It is a super-2 number, since 2×263868411092 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26386841101) 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 15 ways as a sum of consecutive naturals, for example, 1084957 + ... + 1109010.

It is an arithmetic number, because the mean of its divisors is an integer number (2325606080).

Almost surely, 226386841109 is an apocalyptic number.

It is an amenable number.

26386841109 is a deficient number, since it is larger than the sum of its proper divisors (10822856171).

26386841109 is a wasteful number, since it uses less digits than its factorization.

26386841109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2194200.

The product of its (nonzero) digits is 497664, while the sum is 48.

The spelling of 26386841109 in words is "twenty-six billion, three hundred eighty-six million, eight hundred forty-one thousand, one hundred nine".

Divisors: 1 3 19 57 211 633 4009 12027 2193967 6581901 41685373 125056119 462927037 1388781111 8795613703 26386841109