Base | Representation |
---|---|
bin | 100000001000101000… |
… | …1111110100000001111 |
3 | 20121010101100211201000 |
4 | 1000101101332200033 |
5 | 2112312401324441 |
6 | 51411422551343 |
7 | 4662055144314 |
oct | 1002121764017 |
9 | 217111324630 |
10 | 69009401871 |
11 | 272a3010033 |
12 | 1145b138553 |
13 | 667a14ca07 |
14 | 34a9234d0b |
15 | 1bdd68a2b6 |
hex | 101147e80f |
69009401871 has 16 divisors (see below), whose sum is σ = 106681201920. Its totient is φ = 44005995000.
The previous prime is 69009401833. The next prime is 69009401939. The reversal of 69009401871 is 17810490096.
It is a happy number.
It is not a de Polignac number, because 69009401871 - 26 = 69009401807 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (69009401821) 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, 55562505 + ... + 55563746.
It is an arithmetic number, because the mean of its divisors is an integer number (6667575120).
Almost surely, 269009401871 is an apocalyptic number.
69009401871 is a deficient number, since it is larger than the sum of its proper divisors (37671800049).
69009401871 is a wasteful number, since it uses less digits than its factorization.
69009401871 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 111126283 (or 111126277 counting only the distinct ones).
The product of its (nonzero) digits is 108864, while the sum is 45.
The spelling of 69009401871 in words is "sixty-nine billion, nine million, four hundred one thousand, eight hundred seventy-one".
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