Base | Representation |
---|---|
bin | 100101011100010110… |
… | …0101000011000101111 |
3 | 21200112210001122210020 |
4 | 1022320230220120233 |
5 | 2304133434300311 |
6 | 100534453013223 |
7 | 5544405506265 |
oct | 1127054503057 |
9 | 250483048706 |
10 | 80408118831 |
11 | 31112317877 |
12 | 13700624213 |
13 | 7775859951 |
14 | 3c6b054435 |
15 | 2159237c06 |
hex | 12b8b2862f |
80408118831 has 16 divisors (see below), whose sum is σ = 114954278400. Its totient is φ = 49813515648.
The previous prime is 80408118823. The next prime is 80408118851. The reversal of 80408118831 is 13881180408.
It is not a de Polignac number, because 80408118831 - 23 = 80408118823 is a prime.
It is a super-2 number, since 2×804081188312 (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 (80408118851) 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, 9974641 + ... + 9982698.
It is an arithmetic number, because the mean of its divisors is an integer number (7184642400).
Almost surely, 280408118831 is an apocalyptic number.
80408118831 is a deficient number, since it is larger than the sum of its proper divisors (34546159569).
80408118831 is a wasteful number, since it uses less digits than its factorization.
80408118831 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 19957438.
The product of its (nonzero) digits is 49152, while the sum is 42.
The spelling of 80408118831 in words is "eighty billion, four hundred eight million, one hundred eighteen thousand, eight hundred thirty-one".
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