1066056220563 has 16 divisors (see below), whose sum is σ = 1435415285760. Its totient is φ = 703722642336.

The previous prime is 1066056220543. The next prime is 1066056220577. The reversal of 1066056220563 is 3650226506601.

It is not a de Polignac number, because 1066056220563 - 2¹⁶ = 1066056155027 is a prime.

It is a super-2 number, since 2×1066056220563² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1066056220543) 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, 2554645 + ... + 2942502.

It is an arithmetic number, because the mean of its divisors is an integer number (89713455360).

Almost surely, 2^{1066056220563} is an apocalyptic number.

1066056220563 is a deficient number, since it is larger than the sum of its proper divisors (369359065197).

1066056220563 is a wasteful number, since it uses less digits than its factorization.

1066056220563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5497786.

The product of its (nonzero) digits is 388800, while the sum is 42.

The spelling of 1066056220563 in words is "one trillion, sixty-six billion, fifty-six million, two hundred twenty thousand, five hundred sixty-three".