66500103265563 has 32 divisors (see below), whose sum is σ = 97468934112000. Its totient is φ = 39994149686400.

The previous prime is 66500103265549. The next prime is 66500103265577. The reversal of 66500103265563 is 36556230100566.

66500103265563 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (66500103265549) and next prime (66500103265577).

It is not a de Polignac number, because 66500103265563 - 2¹⁴ = 66500103249179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66500103265363) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 143937093 + ... + 144398361.

It is an arithmetic number, because the mean of its divisors is an integer number (3045904191000).

Almost surely, 2^{66500103265563} is an apocalyptic number.

66500103265563 is a deficient number, since it is larger than the sum of its proper divisors (30968830846437).

66500103265563 is a wasteful number, since it uses less digits than its factorization.

66500103265563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494763.

The product of its (nonzero) digits is 2916000, while the sum is 48.

The spelling of 66500103265563 in words is "sixty-six trillion, five hundred billion, one hundred three million, two hundred sixty-five thousand, five hundred sixty-three".