5565451778 has 8 divisors (see below), whose sum is σ = 8361162768. Its totient is φ = 2778397524.

The previous prime is 5565451777. The next prime is 5565451817. The reversal of 5565451778 is 8771545655.

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

It is a super-2 number, since 2×5565451778² = 61948506986486722568, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (5565451777) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2162576 + ... + 2165147.

It is an arithmetic number, because the mean of its divisors is an integer number (1045145346).

Almost surely, 2^5565451778 is an apocalyptic number.

5565451778 is a deficient number, since it is larger than the sum of its proper divisors (2795710990).

5565451778 is a wasteful number, since it uses less digits than its factorization.

5565451778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4328368.

The product of its digits is 5880000, while the sum is 53.

The square root of 5565451778 is about 74601.9555909897. The cubic root of 5565451778 is about 1772.1486220497.

The spelling of 5565451778 in words is "five billion, five hundred sixty-five million, four hundred fifty-one thousand, seven hundred seventy-eight".