166364451064455 has 32 divisors (see below), whose sum is σ = 304216753382400. Its totient is φ = 76050452627712.

The previous prime is 166364451064439. The next prime is 166364451064463. The reversal of 166364451064455 is 554460154463661.

It is not a de Polignac number, because 166364451064455 - 2⁴ = 166364451064439 is a prime.

It is a super-3 number, since 3×166364451064455³ (a number of 44 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 15156790 + ... + 23716179.

It is an arithmetic number, because the mean of its divisors is an integer number (9506773543200).

Almost surely, 2^{166364451064455} is an apocalyptic number.

166364451064455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

166364451064455 is a deficient number, since it is larger than the sum of its proper divisors (137852302317945).

166364451064455 is a wasteful number, since it uses less digits than its factorization.

166364451064455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38913743.

The product of its (nonzero) digits is 124416000, while the sum is 60.

The spelling of 166364451064455 in words is "one hundred sixty-six trillion, three hundred sixty-four billion, four hundred fifty-one million, sixty-four thousand, four hundred fifty-five".