165042434305415 has 16 divisors (see below), whose sum is σ = 199477042544640. Its totient is φ = 131083212189600.

The previous prime is 165042434305303. The next prime is 165042434305421. The reversal of 165042434305415 is 514503434240561.

It is not a de Polignac number, because 165042434305415 - 2¹² = 165042434301319 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 165042434305415.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120000890 + ... + 121368440.

It is an arithmetic number, because the mean of its divisors is an integer number (12467315159040).

Almost surely, 2^{165042434305415} is an apocalyptic number.

165042434305415 is a deficient number, since it is larger than the sum of its proper divisors (34434608239225).

165042434305415 is a wasteful number, since it uses less digits than its factorization.

165042434305415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1541342.

The product of its (nonzero) digits is 3456000, while the sum is 47.

Adding to 165042434305415 its reverse (514503434240561), we get a palindrome (679545868545976).

The spelling of 165042434305415 in words is "one hundred sixty-five trillion, forty-two billion, four hundred thirty-four million, three hundred five thousand, four hundred fifteen".