Base | Representation |
---|---|
bin | 100101011011111011… |
… | …0010100100100100111 |
3 | 21200111210021100101022 |
4 | 1022313312110210213 |
5 | 2304121313210040 |
6 | 100533223521355 |
7 | 5544143502215 |
oct | 1126766244447 |
9 | 250453240338 |
10 | 80393881895 |
11 | 31105283408 |
12 | 136b78b925b |
13 | 7772913722 |
14 | 3c691c9cb5 |
15 | 2157d746b5 |
hex | 12b7d94927 |
80393881895 has 16 divisors (see below), whose sum is σ = 97925465568. Its totient is φ = 63346821120.
The previous prime is 80393881871. The next prime is 80393881901. The reversal of 80393881895 is 59818839308.
It is not a de Polignac number, because 80393881895 - 210 = 80393880871 is a prime.
It is a super-2 number, since 2×803938818952 (a number of 23 digits) contains 22 as substring.
It is a Duffinian number.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4203755 + ... + 4222835.
It is an arithmetic number, because the mean of its divisors is an integer number (6120341598).
Almost surely, 280393881895 is an apocalyptic number.
80393881895 is a deficient number, since it is larger than the sum of its proper divisors (17531583673).
80393881895 is a wasteful number, since it uses less digits than its factorization.
80393881895 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 31730.
The product of its (nonzero) digits is 14929920, while the sum is 62.
The spelling of 80393881895 in words is "eighty billion, three hundred ninety-three million, eight hundred eighty-one thousand, eight hundred ninety-five".
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