5566346781 has 8 divisors (see below), whose sum is σ = 7422140544. Its totient is φ = 3710725440.

The previous prime is 5566346749. The next prime is 5566346789. The reversal of 5566346781 is 1876436655.

5566346781 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5566346781 - 2⁵ = 5566346749 is a prime.

It is a super-2 number, since 2×5566346781² = 61968432972698123922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5566346789) 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, 102220 + ... + 146906.

It is an arithmetic number, because the mean of its divisors is an integer number (927767568).

Almost surely, 2^5566346781 is an apocalyptic number.

It is an amenable number.

5566346781 is a deficient number, since it is larger than the sum of its proper divisors (1855793763).

5566346781 is a wasteful number, since it uses less digits than its factorization.

5566346781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86211.

The product of its digits is 3628800, while the sum is 51.

The square root of 5566346781 is about 74607.9538722246. The cubic root of 5566346781 is about 1772.2436124406.

The spelling of 5566346781 in words is "five billion, five hundred sixty-six million, three hundred forty-six thousand, seven hundred eighty-one".