2159963566 has 16 divisors (see below), whose sum is σ = 3298847184. Its totient is φ = 1060478784.

The previous prime is 2159963539. The next prime is 2159963591. The reversal of 2159963566 is 6653699512.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 556 + ... + 65728.

It is an arithmetic number, because the mean of its divisors is an integer number (206177949).

Almost surely, 2^2159963566 is an apocalyptic number.

2159963566 is a deficient number, since it is larger than the sum of its proper divisors (1138883618).

2159963566 is a wasteful number, since it uses less digits than its factorization.

2159963566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65475.

The product of its digits is 2624400, while the sum is 52.

The square root of 2159963566 is about 46475.4081854049. The cubic root of 2159963566 is about 1292.6535459529.

The spelling of 2159963566 in words is "two billion, one hundred fifty-nine million, nine hundred sixty-three thousand, five hundred sixty-six".