3561955066 has 24 divisors (see below), whose sum is σ = 5548942836. Its totient is φ = 1714379520.

The previous prime is 3561955049. The next prime is 3561955069. The reversal of 3561955066 is 6605591653.

It can be written as a sum of positive squares in 2 ways, for example, as 3143957041 + 417998025 = 56071^2 + 20445^2 .

It is not an unprimeable number, because it can be changed into a prime (3561955069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 262890 + ... + 276106.

Almost surely, 2^3561955066 is an apocalyptic number.

3561955066 is a deficient number, since it is larger than the sum of its proper divisors (1986987770).

3561955066 is a wasteful number, since it uses less digits than its factorization.

3561955066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13374 (or 13327 counting only the distinct ones).

The product of its (nonzero) digits is 729000, while the sum is 46.

The square root of 3561955066 is about 59682.1168022717. The cubic root of 3561955066 is about 1527.2008092516.

The spelling of 3561955066 in words is "three billion, five hundred sixty-one million, nine hundred fifty-five thousand, sixty-six".