5545326778 has 16 divisors (see below), whose sum is σ = 8432696160. Its totient is φ = 2734543216.

The previous prime is 5545326769. The next prime is 5545326811. The reversal of 5545326778 is 8776235455.

It is a happy number.

It is a super-2 number, since 2×5545326778² = 61501298149607722568, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68988 + ... + 125896.

It is an arithmetic number, because the mean of its divisors is an integer number (527043510).

Almost surely, 2^5545326778 is an apocalyptic number.

5545326778 is a deficient number, since it is larger than the sum of its proper divisors (2887369382).

5545326778 is a wasteful number, since it uses less digits than its factorization.

5545326778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57581.

The product of its digits is 7056000, while the sum is 52.

The square root of 5545326778 is about 74466.9509111257. The cubic root of 5545326778 is about 1770.0099777066.

The spelling of 5545326778 in words is "five billion, five hundred forty-five million, three hundred twenty-six thousand, seven hundred seventy-eight".