20345002656265 has 32 divisors (see below), whose sum is σ = 27956971494144. Its totient is φ = 13923258961920.

The previous prime is 20345002656241. The next prime is 20345002656269. The reversal of 20345002656265 is 56265620054302.

It is not a de Polignac number, because 20345002656265 - 2⁵ = 20345002656233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20345002656269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36323217 + ... + 36879073.

It is an arithmetic number, because the mean of its divisors is an integer number (873655359192).

Almost surely, 2^{20345002656265} is an apocalyptic number.

It is an amenable number.

20345002656265 is a deficient number, since it is larger than the sum of its proper divisors (7611968837879).

20345002656265 is a wasteful number, since it uses less digits than its factorization.

20345002656265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557937.

The product of its (nonzero) digits is 2592000, while the sum is 46.

The spelling of 20345002656265 in words is "twenty trillion, three hundred forty-five billion, two million, six hundred fifty-six thousand, two hundred sixty-five".