Base | Representation |
---|---|
bin | 11110010010111100110… |
… | …011101010100100001000 |
3 | 21101000211102001010200002 |
4 | 132102330303222210020 |
5 | 233102244022102220 |
6 | 4232232024302132 |
7 | 303262132403450 |
oct | 36227463524410 |
9 | 7330742033602 |
10 | 2081931831560 |
11 | 732a40274579 |
12 | 2975aa911948 |
13 | 12142c996589 |
14 | 72aa201ad60 |
15 | 39250d95c75 |
hex | 1e4bccea908 |
2081931831560 has 128 divisors (see below), whose sum is σ = 5632333539840. Its totient is φ = 677573683200.
The previous prime is 2081931831557. The next prime is 2081931831607. The reversal of 2081931831560 is 651381391802.
It is an unprimeable number.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2025956 + ... + 2875475.
It is an arithmetic number, because the mean of its divisors is an integer number (44002605780).
Almost surely, 22081931831560 is an apocalyptic number.
2081931831560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.
It is an amenable number.
2081931831560 is an abundant number, since it is smaller than the sum of its proper divisors (3550401708280).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
2081931831560 is a wasteful number, since it uses less digits than its factorization.
2081931831560 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 4901527 (or 4901523 counting only the distinct ones).
The product of its (nonzero) digits is 311040, while the sum is 47.
The spelling of 2081931831560 in words is "two trillion, eighty-one billion, nine hundred thirty-one million, eight hundred thirty-one thousand, five hundred sixty".
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