5661886280 has 64 divisors (see below), whose sum is σ = 12908879280. Its totient is φ = 2234752000.

The previous prime is 5661886277. The next prime is 5661886291. The reversal of 5661886280 is 826881665.

It can be written as a sum of positive squares in 8 ways, for example, as 3555259876 + 2106626404 = 59626^2 + 45898^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1278470 + ... + 1282890.

Almost surely, 2^5661886280 is an apocalyptic number.

It is an amenable number.

5661886280 is an abundant number, since it is smaller than the sum of its proper divisors (7246993000).

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

5661886280 is a wasteful number, since it uses less digits than its factorization.

5661886280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4850 (or 4846 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 50.

The square root of 5661886280 is about 75245.5067097033. The cubic root of 5661886280 is about 1782.3256097968.

The spelling of 5661886280 in words is "five billion, six hundred sixty-one million, eight hundred eighty-six thousand, two hundred eighty".