Base | Representation |
---|---|
bin | 10000110101000001… |
… | …101010000010100111 |
3 | 1201122021221111120200 |
4 | 100311001222002213 |
5 | 244001242332400 |
6 | 12145004001543 |
7 | 1206531116166 |
oct | 206501520247 |
9 | 51567844520 |
10 | 18069495975 |
11 | 7732839853 |
12 | 36035302b3 |
13 | 191c75386b |
14 | c35b5b3dd |
15 | 70b534b00 |
hex | 43506a0a7 |
18069495975 has 18 divisors (see below), whose sum is σ = 32364475416. Its totient is φ = 9637064400.
The previous prime is 18069495931. The next prime is 18069496007. The reversal of 18069495975 is 57959496081.
18069495975 is a `hidden beast` number, since 1 + 80 + 69 + 495 + 9 + 7 + 5 = 666.
It is not a de Polignac number, because 18069495975 - 213 = 18069487783 is a prime.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 40154211 + ... + 40154660.
It is an arithmetic number, because the mean of its divisors is an integer number (1798026412).
Almost surely, 218069495975 is an apocalyptic number.
18069495975 is a gapful number since it is divisible by the number (15) formed by its first and last digit.
18069495975 is a deficient number, since it is larger than the sum of its proper divisors (14294979441).
18069495975 is a wasteful number, since it uses less digits than its factorization.
18069495975 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 80308887 (or 80308879 counting only the distinct ones).
The product of its (nonzero) digits is 24494400, while the sum is 63.
It can be divided in two parts, 180 and 69495975, that added together give a triangular number (69496155 = T11789).
The spelling of 18069495975 in words is "eighteen billion, sixty-nine million, four hundred ninety-five thousand, nine hundred seventy-five".
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