165006115513 has 6 divisors (see below), whose sum is σ = 175283313326. Its totient is φ = 155299873152.

The previous prime is 165006115511. The next prime is 165006115541. The reversal of 165006115513 is 315511600561.

It can be written as a sum of positive squares in 3 ways, for example, as 61607211264 + 103398904249 = 248208^2 + 321557^2 .

It is not a de Polignac number, because 165006115513 - 2¹ = 165006115511 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165006115511) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 285477420 + ... + 285477997.

Almost surely, 2^165006115513 is an apocalyptic number.

It is an amenable number.

165006115513 is a deficient number, since it is larger than the sum of its proper divisors (10277197813).

165006115513 is an equidigital number, since it uses as much as digits as its factorization.

165006115513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570955451 (or 570955434 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 34.

The spelling of 165006115513 in words is "one hundred sixty-five billion, six million, one hundred fifteen thousand, five hundred thirteen".