Base | Representation |
---|---|

bin | 100101111001010111100011… |

… | …000011001101001111110001 |

3 | 210212010111102221000211021121 |

4 | 211321113203003031033301 |

5 | 133321210142342040001 |

6 | 1350251051543022241 |

7 | 50051340231013441 |

oct | 4571274303151761 |

9 | 725114387024247 |

10 | 166670015190001 |

11 | 491193a1550814 |

12 | 16839922a3a981 |

13 | 71ccbb831701b |

14 | 2d22c2c22a121 |

15 | 1440709c896a1 |

hex | 9795e30cd3f1 |

166670015190001 has 2 divisors, whose sum is σ = 166670015190002. Its totient is φ = 166670015190000.

The previous prime is 166670015189999. The next prime is 166670015190017. The reversal of 166670015190001 is 100091510076661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110836257294400 + 55833757895601 = 10527880^2 + 7472199^2 .

It is an emirp because it is prime and its reverse (100091510076661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 166670015190001 - 2^{1} = 166670015189999 is a prime.

It is a super-2 number, since 2×166670015190001^{2} (a number of 29 digits) contains 22 as substring.

Together with 166670015189999, it forms a pair of twin primes.

It is a self number, because there is not a number *n* which added to its sum of digits gives 166670015190001.

It is not a weakly prime, because it can be changed into another prime (166670025190001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83335007595000 + 83335007595001.

It is an arithmetic number, because the mean of its divisors is an integer number (83335007595001).

Almost surely, 2^{166670015190001} is an apocalyptic number.

It is an amenable number.

166670015190001 is a deficient number, since it is larger than the sum of its proper divisors (1).

166670015190001 is an equidigital number, since it uses as much as digits as its factorization.

166670015190001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 68040, while the sum is 43.

The spelling of 166670015190001 in words is "one hundred sixty-six trillion, six hundred seventy billion, fifteen million, one hundred ninety thousand, one".

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