Base | Representation |
---|---|
bin | 10010101000101100… |
… | …111001101010101101 |
3 | 1220122112202002111110 |
4 | 102220230321222231 |
5 | 311440103241023 |
6 | 13105332142233 |
7 | 1305604665351 |
oct | 225054715255 |
9 | 56575662443 |
10 | 20010212013 |
11 | 8539274500 |
12 | 3a65467979 |
13 | 1b6b841b4c |
14 | d7b7c3461 |
15 | 7c1ad6a93 |
hex | 4a8b39aad |
20010212013 has 24 divisors (see below), whose sum is σ = 29405082784. Its totient is φ = 12094806240.
The previous prime is 20010211987. The next prime is 20010212023. The reversal of 20010212013 is 31021201002.
It is not a de Polignac number, because 20010212013 - 228 = 19741776557 is a prime.
It is a self number, because there is not a number n which added to its sum of digits gives 20010212013.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (20010212023) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61506 + ... + 209292.
Almost surely, 220010212013 is an apocalyptic number.
It is an amenable number.
20010212013 is a deficient number, since it is larger than the sum of its proper divisors (9394870771).
20010212013 is a wasteful number, since it uses less digits than its factorization.
20010212013 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 148185 (or 148174 counting only the distinct ones).
The product of its (nonzero) digits is 24, while the sum is 12.
Adding to 20010212013 its reverse (31021201002), we get a palindrome (51031413015).
The spelling of 20010212013 in words is "twenty billion, ten million, two hundred twelve thousand, thirteen".
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