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26306260631 = 747211378949
BaseRepresentation
bin11000011111111110…
…011010111010010111
32111220022212111112022
4120133332122322113
5412333400320011
620030202243355
71620615345260
oct303776327227
974808774468
1026306260631
111017a21aa72
125121ab655b
132633053cc1
1413b7a57967
15a3e6ec8db
hex61ff9ae97

26306260631 has 16 divisors (see below), whose sum is σ = 30849561600. Its totient is φ = 21963826080.

The previous prime is 26306260609. The next prime is 26306260657. The reversal of 26306260631 is 13606260362.

It is not a de Polignac number, because 26306260631 - 210 = 26306259607 is a prime.

It is a super-2 number, since 2×263062606312 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 26306260591 and 26306260600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26306260601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120056 + ... + 258893.

It is an arithmetic number, because the mean of its divisors is an integer number (1928097600).

Almost surely, 226306260631 is an apocalyptic number.

26306260631 is a deficient number, since it is larger than the sum of its proper divisors (4543300969).

26306260631 is a wasteful number, since it uses less digits than its factorization.

26306260631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379214.

The product of its (nonzero) digits is 46656, while the sum is 35.

The spelling of 26306260631 in words is "twenty-six billion, three hundred six million, two hundred sixty thousand, six hundred thirty-one".

Divisors: 1 7 47 211 329 1477 9917 69419 378949 2652643 17810603 79958239 124674221 559707673 3758037233 26306260631