165166596044087 has 24 divisors (see below), whose sum is σ = 183255518024208. Its totient is φ = 148738372555520.

The previous prime is 165166596044071. The next prime is 165166596044101. The reversal of 165166596044087 is 780440695661561.

It is not a de Polignac number, because 165166596044087 - 2⁴ = 165166596044071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165166596044887) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 199916693 + ... + 200741169.

It is an arithmetic number, because the mean of its divisors is an integer number (7635646584342).

Almost surely, 2^{165166596044087} is an apocalyptic number.

165166596044087 is a deficient number, since it is larger than the sum of its proper divisors (18088921980121).

165166596044087 is a wasteful number, since it uses less digits than its factorization.

165166596044087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 840079 (or 840068 counting only the distinct ones).

The product of its (nonzero) digits is 261273600, while the sum is 68.

The spelling of 165166596044087 in words is "one hundred sixty-five trillion, one hundred sixty-six billion, five hundred ninety-six million, forty-four thousand, eighty-seven".