2165354201515 has 16 divisors (see below), whose sum is σ = 2599973773920. Its totient is φ = 1731251128320.

The previous prime is 2165354201513. The next prime is 2165354201539. The reversal of 2165354201515 is 5151024535612.

It is not a de Polignac number, because 2165354201515 - 2¹ = 2165354201513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2165354201513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107393035 + ... + 107413195.

It is an arithmetic number, because the mean of its divisors is an integer number (162498360870).

Almost surely, 2^{2165354201515} is an apocalyptic number.

2165354201515 is a deficient number, since it is larger than the sum of its proper divisors (434619572405).

2165354201515 is a wasteful number, since it uses less digits than its factorization.

2165354201515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31902.

The product of its (nonzero) digits is 180000, while the sum is 40.

The spelling of 2165354201515 in words is "two trillion, one hundred sixty-five billion, three hundred fifty-four million, two hundred one thousand, five hundred fifteen".