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26368815161 = 1312831580959
BaseRepresentation
bin11000100011101101…
…000011000000111001
32112001200120121012202
4120203231003000321
5413000404041121
620040315115545
71622305142063
oct304355030071
975050517182
1026368815161
1110201566127
12513aa42bb5
132642cb6910
1413c209c733
15a44e5740b
hex623b43039

26368815161 has 8 divisors (see below), whose sum is σ = 28419336960. Its totient is φ = 24321457872.

The previous prime is 26368815149. The next prime is 26368815289. The reversal of 26368815161 is 16151886362.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 26368815161 - 26 = 26368815097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26368815131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 773801 + ... + 807158.

It is an arithmetic number, because the mean of its divisors is an integer number (3552417120).

Almost surely, 226368815161 is an apocalyptic number.

It is an amenable number.

26368815161 is a deficient number, since it is larger than the sum of its proper divisors (2050521799).

26368815161 is a wasteful number, since it uses less digits than its factorization.

26368815161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1582255.

The product of its digits is 414720, while the sum is 47.

The spelling of 26368815161 in words is "twenty-six billion, three hundred sixty-eight million, eight hundred fifteen thousand, one hundred sixty-one".

Divisors: 1 13 1283 16679 1580959 20552467 2028370397 26368815161