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26230864161 = 3711634391721
BaseRepresentation
bin11000011011011110…
…110011100100100001
32111201001222222000110
4120123132303210201
5412210100123121
620014510241533
71616011444425
oct303336634441
974631888013
1026230864161
1110140703537
1251007b62a9
1326205460c8
1413aba2cb85
15a37ca7d76
hex61b7b3921

26230864161 has 32 divisors (see below), whose sum is σ = 35786741760. Its totient is φ = 17086204800.

The previous prime is 26230864159. The next prime is 26230864183. The reversal of 26230864161 is 16146803262.

It is not a de Polignac number, because 26230864161 - 21 = 26230864159 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26230864111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15240781 + ... + 15242501.

It is an arithmetic number, because the mean of its divisors is an integer number (1118335680).

Almost surely, 226230864161 is an apocalyptic number.

It is an amenable number.

26230864161 is a deficient number, since it is larger than the sum of its proper divisors (9555877599).

26230864161 is a wasteful number, since it uses less digits than its factorization.

26230864161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2397.

The product of its (nonzero) digits is 82944, while the sum is 39.

The spelling of 26230864161 in words is "twenty-six billion, two hundred thirty million, eight hundred sixty-four thousand, one hundred sixty-one".

Divisors: 1 3 71 163 213 439 489 1317 1721 5163 11573 31169 34719 71557 93507 122191 214671 280523 366573 755519 841569 2266557 5080547 15241641 19917133 53641849 59751399 123149597 160925547 369448791 8743621387 26230864161