3561620044 has 12 divisors (see below), whose sum is σ = 6233349304. Its totient is φ = 1780663104.

The previous prime is 3561620033. The next prime is 3561620047. The reversal of 3561620044 is 4400261653.

It is a junction number, because it is equal to n+sod(n) for n = 3561619988 and 3561620015.

It is not an unprimeable number, because it can be changed into a prime (3561620047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32179 + ... + 90325.

Almost surely, 2^3561620044 is an apocalyptic number.

It is an amenable number.

3561620044 is a deficient number, since it is larger than the sum of its proper divisors (2671729260).

3561620044 is a wasteful number, since it uses less digits than its factorization.

3561620044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73464 (or 73462 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 3561620044 is about 59679.3100161187. The cubic root of 3561620044 is about 1527.1529271286.

Adding to 3561620044 its reverse (4400261653), we get a palindrome (7961881697).

The spelling of 3561620044 in words is "three billion, five hundred sixty-one million, six hundred twenty thousand, forty-four".