164553215203265 has 16 divisors (see below), whose sum is σ = 225673191099648. Its totient is φ = 112836385300416.

The previous prime is 164553215203241. The next prime is 164553215203369. The reversal of 164553215203265 is 562302512355461.

It is a cyclic number.

It is not a de Polignac number, because 164553215203265 - 2¹⁸ = 164553214941121 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64616039 + ... + 67114371.

It is an arithmetic number, because the mean of its divisors is an integer number (14104574443728).

Almost surely, 2^{164553215203265} is an apocalyptic number.

It is an amenable number.

164553215203265 is a deficient number, since it is larger than the sum of its proper divisors (61119975896383).

164553215203265 is a wasteful number, since it uses less digits than its factorization.

164553215203265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4380208.

The product of its (nonzero) digits is 6480000, while the sum is 50.

The spelling of 164553215203265 in words is "one hundred sixty-four trillion, five hundred fifty-three billion, two hundred fifteen million, two hundred three thousand, two hundred sixty-five".