Base | Representation |
---|---|
bin | 10001101011010010010100… |
… | …01000001101001011000001 |
3 | 12002122000001202101212022001 |
4 | 20311221022020031023001 |
5 | 20043324142102201024 |
6 | 214400541344344001 |
7 | 11121213060605215 |
oct | 1065511210151301 |
9 | 162560052355261 |
10 | 38870697693889 |
11 | 11426a74544876 |
12 | 443949a015001 |
13 | 188c64cb39c29 |
14 | 9854cd500945 |
15 | 4761b1a0b244 |
hex | 235a4a20d2c1 |
38870697693889 has 2 divisors, whose sum is σ = 38870697693890. Its totient is φ = 38870697693888.
The previous prime is 38870697693859. The next prime is 38870697693943. The reversal of 38870697693889 is 98839679607883.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 38524577271489 + 346120422400 = 6206817^2 + 588320^2 .
It is a cyclic number.
It is not a de Polignac number, because 38870697693889 - 215 = 38870697661121 is a prime.
It is a super-2 number, since 2×388706976938892 (a number of 28 digits) contains 22 as substring.
It is not a weakly prime, because it can be changed into another prime (38870697693859) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19435348846944 + 19435348846945.
It is an arithmetic number, because the mean of its divisors is an integer number (19435348846945).
Almost surely, 238870697693889 is an apocalyptic number.
It is an amenable number.
38870697693889 is a deficient number, since it is larger than the sum of its proper divisors (1).
38870697693889 is an equidigital number, since it uses as much as digits as its factorization.
38870697693889 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 47405481984, while the sum is 91.
The spelling of 38870697693889 in words is "thirty-eight trillion, eight hundred seventy billion, six hundred ninety-seven million, six hundred ninety-three thousand, eight hundred eighty-nine".
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