Base | Representation |
---|---|
bin | 100101101011001111… |
… | …1110000110010111101 |
3 | 21201211121210101201122 |
4 | 1023112133300302331 |
5 | 2311144430440020 |
6 | 101100232320325 |
7 | 5562656115230 |
oct | 1132637606275 |
9 | 251747711648 |
10 | 80908061885 |
11 | 31349545452 |
12 | 1381bb430a5 |
13 | 78252c1b41 |
14 | 3cb75d3417 |
15 | 218808e125 |
hex | 12d67f0cbd |
80908061885 has 8 divisors (see below), whose sum is σ = 110959627776. Its totient is φ = 55479813840.
The previous prime is 80908061867. The next prime is 80908061917. The reversal of 80908061885 is 58816080908.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 80908061885 - 214 = 80908045501 is a prime.
It is a super-2 number, since 2×809080618852 (a number of 23 digits) contains 22 as substring.
It is a Duffinian number.
It is a Curzon number.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1155829421 + ... + 1155829490.
It is an arithmetic number, because the mean of its divisors is an integer number (13869953472).
Almost surely, 280908061885 is an apocalyptic number.
It is an amenable number.
80908061885 is a deficient number, since it is larger than the sum of its proper divisors (30051565891).
80908061885 is a wasteful number, since it uses less digits than its factorization.
80908061885 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2311658923.
The product of its (nonzero) digits is 1105920, while the sum is 53.
The spelling of 80908061885 in words is "eighty billion, nine hundred eight million, sixty-one thousand, eight hundred eighty-five".
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