Base | Representation |
---|---|
bin | 1011101110111101001000… |
… | …0101110111111010011110 |
3 | 1200200100112120202120112011 |
4 | 2323233102011313322132 |
5 | 3142333341223414430 |
6 | 43234440344301434 |
7 | 2501042345516251 |
oct | 273572205677236 |
9 | 50610476676464 |
10 | 12901311544990 |
11 | 4124463037880 |
12 | 154443b17187a |
13 | 727785ac67cb |
14 | 3285d924d098 |
15 | 1758d566d22a |
hex | bbbd2177e9e |
12901311544990 has 32 divisors (see below), whose sum is σ = 25333635206880. Its totient is φ = 4691358105600.
The previous prime is 12901311544949. The next prime is 12901311545063. The reversal of 12901311544990 is 9944511310921.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30843166 + ... + 31258654.
It is an arithmetic number, because the mean of its divisors is an integer number (791676100215).
Almost surely, 212901311544990 is an apocalyptic number.
12901311544990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
12901311544990 is a deficient number, since it is larger than the sum of its proper divisors (12432323661890).
12901311544990 is a wasteful number, since it uses less digits than its factorization.
12901311544990 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 697788.
The product of its (nonzero) digits is 349920, while the sum is 49.
The spelling of 12901311544990 in words is "twelve trillion, nine hundred one billion, three hundred eleven million, five hundred forty-four thousand, nine hundred ninety".
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