161515660006001 has 8 divisors (see below), whose sum is σ = 188516758183680. Its totient is φ = 135496419943968.

The previous prime is 161515660005971. The next prime is 161515660006039. The reversal of 161515660006001 is 100600066515161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 161515660006001 - 2²⁶ = 161515592897137 is a prime.

It is a super-2 number, since 2×161515660006001² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161515660006061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 245464528556 + ... + 245464529213.

It is an arithmetic number, because the mean of its divisors is an integer number (23564594772960).

Almost surely, 2^{161515660006001} is an apocalyptic number.

It is an amenable number.

161515660006001 is a deficient number, since it is larger than the sum of its proper divisors (27001098177679).

161515660006001 is an equidigital number, since it uses as much as digits as its factorization.

161515660006001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490929057823.

The product of its (nonzero) digits is 32400, while the sum is 38.

The spelling of 161515660006001 in words is "one hundred sixty-one trillion, five hundred fifteen billion, six hundred sixty million, six thousand, one".