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26068007808 = 27321747127223
BaseRepresentation
bin11000010001110001…
…100011101110000000
32111021201120000002200
4120101301203232000
5411341402222213
615550411513200
71611663260523
oct302161435600
974251500080
1026068007808
1110067790107
125076158800
1325c58954bb
141394158bba
15a28839273
hex611c63b80

26068007808 has 384 divisors, whose sum is σ = 82121195520. Its totient is φ = 7905558528.

The previous prime is 26068007803. The next prime is 26068007821. The reversal of 26068007808 is 80870086062.

It is a tau number, because it is divible by the number of its divisors (384).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26068007803) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 116896785 + ... + 116897007.

It is an arithmetic number, because the mean of its divisors is an integer number (213857280).

Almost surely, 226068007808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26068007808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41060597760).

26068007808 is an abundant number, since it is smaller than the sum of its proper divisors (56053187712).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26068007808 is a wasteful number, since it uses less digits than its factorization.

26068007808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434 (or 419 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 45.

The spelling of 26068007808 in words is "twenty-six billion, sixty-eight million, seven thousand, eight hundred eight".