215670715220065 has 32 divisors (see below), whose sum is σ = 306452045249280. Its totient is φ = 142566820187904.

The previous prime is 215670715220047. The next prime is 215670715220131. The reversal of 215670715220065 is 560022517076512.

It is not a de Polignac number, because 215670715220065 - 2²⁷ = 215670581002337 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, 164575554 + ... + 165880843.

It is an arithmetic number, because the mean of its divisors is an integer number (9576626414040).

Almost surely, 2^{215670715220065} is an apocalyptic number.

It is an amenable number.

215670715220065 is a deficient number, since it is larger than the sum of its proper divisors (90781330029215).

215670715220065 is a wasteful number, since it uses less digits than its factorization.

215670715220065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330457081.

The product of its (nonzero) digits is 1764000, while the sum is 49.

The spelling of 215670715220065 in words is "two hundred fifteen trillion, six hundred seventy billion, seven hundred fifteen million, two hundred twenty thousand, sixty-five".