5561166784 has 14 divisors (see below), whose sum is σ = 11035440464. Its totient is φ = 2780583360.

The previous prime is 5561166773. The next prime is 5561166797. The reversal of 5561166784 is 4876611655.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43446552 + ... + 43446679.

Almost surely, 2^5561166784 is an apocalyptic number.

It is an amenable number.

5561166784 is a deficient number, since it is larger than the sum of its proper divisors (5474273680).

5561166784 is an equidigital number, since it uses as much as digits as its factorization.

5561166784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86893243 (or 86893233 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 49.

The square root of 5561166784 is about 74573.2310148890. The cubic root of 5561166784 is about 1771.6936966635.

The spelling of 5561166784 in words is "five billion, five hundred sixty-one million, one hundred sixty-six thousand, seven hundred eighty-four".