165015550161015 has 16 divisors (see below), whose sum is σ = 279555755567328. Its totient is φ = 82831334982656.

The previous prime is 165015550161013. The next prime is 165015550161019. The reversal of 165015550161015 is 510161055510561.

It is not a de Polignac number, because 165015550161015 - 2¹ = 165015550161013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165015550161013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 323559902022 + ... + 323559902531.

It is an arithmetic number, because the mean of its divisors is an integer number (17472234722958).

Almost surely, 2^{165015550161015} is an apocalyptic number.

165015550161015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

165015550161015 is a deficient number, since it is larger than the sum of its proper divisors (114540205406313).

165015550161015 is a wasteful number, since it uses less digits than its factorization.

165015550161015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 647119804578.

The product of its (nonzero) digits is 112500, while the sum is 42.

The spelling of 165015550161015 in words is "one hundred sixty-five trillion, fifteen billion, five hundred fifty million, one hundred sixty-one thousand, fifteen".