Base | Representation |
---|---|
bin | 100101101100000011… |
… | …1111111011001010100 |
3 | 21201220112012112112021 |
4 | 1023120013333121110 |
5 | 2311223424302120 |
6 | 101103050102524 |
7 | 5563440263404 |
oct | 1133007773124 |
9 | 251815175467 |
10 | 80935384660 |
11 | 31362a07459 |
12 | 1382911aa44 |
13 | 782ab6a370 |
14 | 3cbb0a6804 |
15 | 218a689aaa |
hex | 12d81ff654 |
80935384660 has 192 divisors, whose sum is σ = 202616709120. Its totient is φ = 26870538240.
The previous prime is 80935384639. The next prime is 80935384661. The reversal of 80935384660 is 6648353908.
It is a Harshad number since it is a multiple of its sum of digits (52).
It is a junction number, because it is equal to n+sod(n) for n = 80935384598 and 80935384607.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (80935384661) by changing a digit.
It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10820842 + ... + 10828318.
It is an arithmetic number, because the mean of its divisors is an integer number (1055295360).
Almost surely, 280935384660 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 80935384660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101308354560).
80935384660 is an abundant number, since it is smaller than the sum of its proper divisors (121681324460).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
80935384660 is a wasteful number, since it uses less digits than its factorization.
80935384660 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 7626 (or 7624 counting only the distinct ones).
The product of its (nonzero) digits is 3732480, while the sum is 52.
The spelling of 80935384660 in words is "eighty billion, nine hundred thirty-five million, three hundred eighty-four thousand, six hundred sixty".
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