165760505515 has 32 divisors (see below), whose sum is σ = 217551635136. Its totient is φ = 120244584960.

The previous prime is 165760505509. The next prime is 165760505563. The reversal of 165760505515 is 515505067561.

It is not a de Polignac number, because 165760505515 - 2¹⁵ = 165760472747 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 58426677 + ... + 58429513.

It is an arithmetic number, because the mean of its divisors is an integer number (6798488598).

Almost surely, 2^165760505515 is an apocalyptic number.

165760505515 is a deficient number, since it is larger than the sum of its proper divisors (51791129621).

165760505515 is a wasteful number, since it uses less digits than its factorization.

165760505515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5199.

The product of its (nonzero) digits is 787500, while the sum is 46.

The spelling of 165760505515 in words is "one hundred sixty-five billion, seven hundred sixty million, five hundred five thousand, five hundred fifteen".