5661258212 has 12 divisors (see below), whose sum is σ = 9917287296. Its totient is φ = 2827747560.

The previous prime is 5661258193. The next prime is 5661258217. The reversal of 5661258212 is 2128521665.

It is not an unprimeable number, because it can be changed into a prime (5661258217) 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 3 ways as a sum of consecutive naturals, for example, 715964 + ... + 723827.

It is an arithmetic number, because the mean of its divisors is an integer number (826440608).

Almost surely, 2^5661258212 is an apocalyptic number.

It is an amenable number.

5661258212 is a deficient number, since it is larger than the sum of its proper divisors (4256029084).

5661258212 is a wasteful number, since it uses less digits than its factorization.

5661258212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1440778 (or 1440776 counting only the distinct ones).

The product of its digits is 57600, while the sum is 38.

The square root of 5661258212 is about 75241.3331354516. Note that the first 3 decimals coincide. The cubic root of 5661258212 is about 1782.2597034292.

Adding to 5661258212 its reverse (2128521665), we get a palindrome (7789779877).

The spelling of 5661258212 in words is "five billion, six hundred sixty-one million, two hundred fifty-eight thousand, two hundred twelve".