5661223126 has 32 divisors (see below), whose sum is σ = 9201927168. Its totient is φ = 2596678560.

The previous prime is 5661223121. The next prime is 5661223153. The reversal of 5661223126 is 6213221665.

It is a junction number, because it is equal to n+sod(n) for n = 5661223091 and 5661223100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5661223121) 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, 3611995 + ... + 3613561.

It is an arithmetic number, because the mean of its divisors is an integer number (287560224).

Almost surely, 2^5661223126 is an apocalyptic number.

5661223126 is a deficient number, since it is larger than the sum of its proper divisors (3540704042).

5661223126 is a wasteful number, since it uses less digits than its factorization.

5661223126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2356.

The product of its digits is 25920, while the sum is 34.

The square root of 5661223126 is about 75241.0999786686. The cubic root of 5661223126 is about 1782.2560215331.

The spelling of 5661223126 in words is "five billion, six hundred sixty-one million, two hundred twenty-three thousand, one hundred twenty-six".