165155100655999 has 8 divisors (see below), whose sum is σ = 170704378570880. Its totient is φ = 159619678617600.

The previous prime is 165155100655921. The next prime is 165155100656069. The reversal of 165155100655999 is 999556001551561.

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 165155100655999 - 2⁷ = 165155100655871 is a prime.

It is a super-2 number, since 2×165155100655999² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165155100655099) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3463944882 + ... + 3463992559.

It is an arithmetic number, because the mean of its divisors is an integer number (21338047321360).

Almost surely, 2^{165155100655999} is an apocalyptic number.

165155100655999 is a deficient number, since it is larger than the sum of its proper divisors (5549277914881).

165155100655999 is an equidigital number, since it uses as much as digits as its factorization.

165155100655999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6927938241.

The product of its (nonzero) digits is 82012500, while the sum is 67.

The spelling of 165155100655999 in words is "one hundred sixty-five trillion, one hundred fifty-five billion, one hundred million, six hundred fifty-five thousand, nine hundred ninety-nine".