5661447270 has 64 divisors (see below), whose sum is σ = 14428647936. Its totient is φ = 1416773120.

The previous prime is 5661447269. The next prime is 5661447289. The reversal of 5661447270 is 727441665.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 160975 + ... + 192965.

It is an arithmetic number, because the mean of its divisors is an integer number (225447624).

Almost surely, 2^5661447270 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5661447270, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7214323968).

5661447270 is an abundant number, since it is smaller than the sum of its proper divisors (8767200666).

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

5661447270 is a wasteful number, since it uses less digits than its factorization.

5661447270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32365.

The product of its (nonzero) digits is 282240, while the sum is 42.

The square root of 5661447270 is about 75242.5894689969. The cubic root of 5661447270 is about 1782.2795427589.

The spelling of 5661447270 in words is "five billion, six hundred sixty-one million, four hundred forty-seven thousand, two hundred seventy".