5661258211 has 12 divisors (see below), whose sum is σ = 6581557552. Its totient is φ = 4770240624.

The previous prime is 5661258193. The next prime is 5661258217. The reversal of 5661258211 is 1128521665.

It is not a de Polignac number, because 5661258211 - 2¹¹ = 5661256163 is a prime.

It is a super-2 number, since 2×5661258211² = 64099689063229841042, which contains 22 as substring.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5661258217) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 91800 + ... + 140533.

Almost surely, 2^5661258211 is an apocalyptic number.

5661258211 is a deficient number, since it is larger than the sum of its proper divisors (920299341).

5661258211 is an equidigital number, since it uses as much as digits as its factorization.

5661258211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232458 (or 232399 counting only the distinct ones).

The product of its digits is 28800, while the sum is 37.

The square root of 5661258211 is about 75241.3331288063. Note that the first 3 decimals coincide. The cubic root of 5661258211 is about 1782.2597033243.

Adding to 5661258211 its reverse (1128521665), we get a palindrome (6789779876).

The spelling of 5661258211 in words is "five billion, six hundred sixty-one million, two hundred fifty-eight thousand, two hundred eleven".