166115505116504 has 48 divisors (see below), whose sum is σ = 321522291767880. Its totient is φ = 80456943052800.

The previous prime is 166115505116501. The next prime is 166115505116531. The reversal of 166115505116504 is 405611505511661.

It is a super-2 number, since 2×166115505116504² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166115505116501) 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 11 ways as a sum of consecutive naturals, for example, 30922697 + ... + 35894904.

Almost surely, 2^{166115505116504} is an apocalyptic number.

It is an amenable number.

166115505116504 is a deficient number, since it is larger than the sum of its proper divisors (155406786651376).

166115505116504 is a wasteful number, since it uses less digits than its factorization.

166115505116504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66817908 (or 66817867 counting only the distinct ones).

The product of its (nonzero) digits is 540000, while the sum is 47.

The spelling of 166115505116504 in words is "one hundred sixty-six trillion, one hundred fifteen billion, five hundred five million, one hundred sixteen thousand, five hundred four".