Base | Representation |
---|---|
bin | 100000010100100100… |
… | …1100000011101111000 |
3 | 20122011021211221111220 |
4 | 1000221021200131320 |
5 | 2114122404203442 |
6 | 51515245352040 |
7 | 5005016601420 |
oct | 1005111403570 |
9 | 218137757456 |
10 | 69409834872 |
11 | 274890512a4 |
12 | 11551268620 |
13 | 67120b3411 |
14 | 35064ad480 |
15 | 1c138d6eec |
hex | 1029260778 |
69409834872 has 64 divisors (see below), whose sum is σ = 198376780800. Its totient is φ = 19825084800.
The previous prime is 69409834831. The next prime is 69409834873. The reversal of 69409834872 is 27843890496.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (69409834873) 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, 478497 + ... + 606447.
It is an arithmetic number, because the mean of its divisors is an integer number (3099637200).
Almost surely, 269409834872 is an apocalyptic number.
It is an amenable number.
69409834872 is an abundant number, since it is smaller than the sum of its proper divisors (128966945928).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
69409834872 is a wasteful number, since it uses less digits than its factorization.
69409834872 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 131196 (or 131192 counting only the distinct ones).
The product of its (nonzero) digits is 20901888, while the sum is 60.
The spelling of 69409834872 in words is "sixty-nine billion, four hundred nine million, eight hundred thirty-four thousand, eight hundred seventy-two".
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