Base | Representation |
---|---|
bin | 100100011011011100… |
… | …1001010111100000101 |
3 | 21110221000020110021020 |
4 | 1020312321022330011 |
5 | 2240203433234010 |
6 | 55534420141353 |
7 | 5436423104436 |
oct | 1106671127405 |
9 | 243830213236 |
10 | 78230368005 |
11 | 301a50043a9 |
12 | 131b3237859 |
13 | 74b96183aa |
14 | 3b01b2948d |
15 | 207ce63470 |
hex | 1236e4af05 |
78230368005 has 16 divisors (see below), whose sum is σ = 127831751424. Its totient is φ = 40835142080.
The previous prime is 78230368003. The next prime is 78230368031. The reversal of 78230368005 is 50086303287.
It is not a de Polignac number, because 78230368005 - 21 = 78230368003 is a prime.
It is a super-2 number, since 2×782303680052 (a number of 23 digits) contains 22 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (78230368003) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55481826 + ... + 55483235.
It is an arithmetic number, because the mean of its divisors is an integer number (7989484464).
Almost surely, 278230368005 is an apocalyptic number.
It is an amenable number.
78230368005 is a deficient number, since it is larger than the sum of its proper divisors (49601383419).
78230368005 is a wasteful number, since it uses less digits than its factorization.
78230368005 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 110965116.
The product of its (nonzero) digits is 241920, while the sum is 42.
The spelling of 78230368005 in words is "seventy-eight billion, two hundred thirty million, three hundred sixty-eight thousand, five".
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