5661258216 has 32 divisors (see below), whose sum is σ = 14290560960. Its totient is φ = 1868764032.

The previous prime is 5661258193. The next prime is 5661258217. The reversal of 5661258216 is 6128521665.

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 7 ways as a sum of consecutive naturals, for example, 1142605 + ... + 1147548.

It is an arithmetic number, because the mean of its divisors is an integer number (446580030).

Almost surely, 2^5661258216 is an apocalyptic number.

It is an amenable number.

5661258216 is an abundant number, since it is smaller than the sum of its proper divisors (8629302744).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5661258216 is a wasteful number, since it uses less digits than its factorization.

5661258216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2290265 (or 2290261 counting only the distinct ones).

The product of its digits is 172800, while the sum is 42.

The square root of 5661258216 is about 75241.3331620327. Note that the first 3 decimals coincide. The cubic root of 5661258216 is about 1782.2597038489.

The spelling of 5661258216 in words is "five billion, six hundred sixty-one million, two hundred fifty-eight thousand, two hundred sixteen".