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69488545888441 = 4872171172
BaseRepresentation
bin11111100110011000100000…
…00101111111100010111001
3100010001001002020110220101001
433303030100011333202321
533102000020221412231
6403442333002525001
720431244642305201
oct1763142005774271
9303031066426331
1069488545888441
1120160a21656129
127963419506761
132ca0984855334
141323399323401
15807853521b61
hex3f331017f8b9

69488545888441 has 9 divisors (see below), whose sum is σ = 69635594045199. Its totient is φ = 69341807650104.

The previous prime is 69488545888439. The next prime is 69488545888471. The reversal of 69488545888441 is 14488854588496.

The square root of 69488545888441 is 8335979.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 73053981225 + 69415491907216 = 270285^2 + 8331596^2 .

It is not a de Polignac number, because 69488545888441 - 21 = 69488545888439 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (69488545888471) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 4059613215 + ... + 4059630331.

Almost surely, 269488545888441 is an apocalyptic number.

69488545888441 is the 8335979-th square number.

69488545888441 is the 4167990-th centered octagonal number.

It is an amenable number.

69488545888441 is a deficient number, since it is larger than the sum of its proper divisors (147048156758).

69488545888441 is an frugal number, since it uses more digits than its factorization.

69488545888441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35208 (or 17604 counting only the distinct ones).

The product of its digits is 11324620800, while the sum is 82.

The spelling of 69488545888441 in words is "sixty-nine trillion, four hundred eighty-eight billion, five hundred forty-five million, eight hundred eighty-eight thousand, four hundred forty-one".

Divisors: 1 487 17117 237169 8335979 292991689 4059621773 142686952543 69488545888441