165015550161055 has 64 divisors (see below), whose sum is σ = 232311533414400. Its totient is φ = 111245773317120.

The previous prime is 165015550161041. The next prime is 165015550161113. The reversal of 165015550161055 is 550161055510561.

It is a happy number.

It is not a de Polignac number, because 165015550161055 - 2⁹ = 165015550160543 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 165015550160996 and 165015550161014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 16267131 + ... + 24385459.

It is an arithmetic number, because the mean of its divisors is an integer number (3629867709600).

Almost surely, 2^{165015550161055} is an apocalyptic number.

165015550161055 is a deficient number, since it is larger than the sum of its proper divisors (67295983253345).

165015550161055 is a wasteful number, since it uses less digits than its factorization.

165015550161055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8118784.

The product of its (nonzero) digits is 562500, while the sum is 46.

The spelling of 165015550161055 in words is "one hundred sixty-five trillion, fifteen billion, five hundred fifty million, one hundred sixty-one thousand, fifty-five".