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2680208280881 = 15111773797671
BaseRepresentation
bin100111000000001000110…
…111001100110100110001
3100111020002022201202002222
4213000020313030310301
5322403031304442011
65411134245050425
7364432026331415
oct47001067146461
910436068652088
102680208280881
11943740779a1a
123735383b6a15
1316598651cbc1
1493a19408d45
1549ab975bddb
hex27008dccd31

2680208280881 has 4 divisors (see below), whose sum is σ = 2681982080064. Its totient is φ = 2678434481700.

The previous prime is 2680208280773. The next prime is 2680208280899. The reversal of 2680208280881 is 1880828020862.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2680208280881 - 214 = 2680208264497 is a prime.

It is a super-2 number, since 2×26802082808812 (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2680208282881) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 886897325 + ... + 886900346.

It is an arithmetic number, because the mean of its divisors is an integer number (670495520016).

Almost surely, 22680208280881 is an apocalyptic number.

It is an amenable number.

2680208280881 is a deficient number, since it is larger than the sum of its proper divisors (1773799183).

2680208280881 is a wasteful number, since it uses less digits than its factorization.

2680208280881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1773799182.

The product of its (nonzero) digits is 1572864, while the sum is 53.

The spelling of 2680208280881 in words is "two trillion, six hundred eighty billion, two hundred eight million, two hundred eighty thousand, eight hundred eighty-one".

Divisors: 1 1511 1773797671 2680208280881