2066155563 has 16 divisors (see below), whose sum is σ = 2788482816. Its totient is φ = 1360735200.

The previous prime is 2066155523. The next prime is 2066155601. The reversal of 2066155563 is 3655516602.

It is not a de Polignac number, because 2066155563 - 2⁹ = 2066155051 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2066155523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69013 + ... + 94313.

It is an arithmetic number, because the mean of its divisors is an integer number (174280176).

Almost surely, 2^2066155563 is an apocalyptic number.

2066155563 is a deficient number, since it is larger than the sum of its proper divisors (722327253).

2066155563 is a wasteful number, since it uses less digits than its factorization.

2066155563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25634.

The product of its (nonzero) digits is 162000, while the sum is 39.

The square root of 2066155563 is about 45454.9839181580. The cubic root of 2066155563 is about 1273.6624318091.

The spelling of 2066155563 in words is "two billion, sixty-six million, one hundred fifty-five thousand, five hundred sixty-three".