Base | Representation |
---|---|
bin | 111101000111001111… |
… | …1000111110100110010 |
3 | 110112202022100111200020 |
4 | 1322032133013310302 |
5 | 4122234310321231 |
6 | 140142434504310 |
7 | 12324144462423 |
oct | 1721637076462 |
9 | 415668314606 |
10 | 131239542066 |
11 | 50727333466 |
12 | 21527a35096 |
13 | c4b6932289 |
14 | 64cdd6d64a |
15 | 3631ab0396 |
hex | 1e8e7c7d32 |
131239542066 has 24 divisors (see below), whose sum is σ = 265679667600. Its totient is φ = 43219433976.
The previous prime is 131239542047. The next prime is 131239542103. The reversal of 131239542066 is 660245932131.
It is an unprimeable number.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1546216 + ... + 1628883.
It is an arithmetic number, because the mean of its divisors is an integer number (11069986150).
Almost surely, 2131239542066 is an apocalyptic number.
131239542066 is an abundant number, since it is smaller than the sum of its proper divisors (134440125534).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
131239542066 is an equidigital number, since it uses as much as digits as its factorization.
131239542066 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3175270 (or 3175187 counting only the distinct ones).
The product of its (nonzero) digits is 233280, while the sum is 42.
The spelling of 131239542066 in words is "one hundred thirty-one billion, two hundred thirty-nine million, five hundred forty-two thousand, sixty-six".
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