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2168754560909 = 83491265720029
BaseRepresentation
bin11111100011110011110…
…110000101111110001101
321200022221020022202211122
4133203303312011332031
5241013102131422114
64340151224530325
7312454521414326
oct37436366057615
97608836282748
102168754560909
11766844457152
122b039b6209a5
13129688477841
1476d7ad6944d
153b633313e8e
hex1f8f3d85f8d

2168754560909 has 16 divisors (see below), whose sum is σ = 2200291974720. Its totient is φ = 2137349706240.

The previous prime is 2168754560893. The next prime is 2168754560927. The reversal of 2168754560909 is 9090654578612.

It is not a de Polignac number, because 2168754560909 - 24 = 2168754560893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2168754560969) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108270707 + ... + 108290735.

It is an arithmetic number, because the mean of its divisors is an integer number (137518248420).

Almost surely, 22168754560909 is an apocalyptic number.

It is an amenable number.

2168754560909 is a deficient number, since it is larger than the sum of its proper divisors (31537413811).

2168754560909 is a wasteful number, since it uses less digits than its factorization.

2168754560909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23260.

The product of its (nonzero) digits is 32659200, while the sum is 62.

The spelling of 2168754560909 in words is "two trillion, one hundred sixty-eight billion, seven hundred fifty-four million, five hundred sixty thousand, nine hundred nine".

Divisors: 1 83 491 2657 20029 40753 220531 1304587 1662407 9834239 53217053 108280721 816241837 4417015399 26129573023 2168754560909