5478773668 has 24 divisors (see below), whose sum is σ = 10426224312. Its totient is φ = 2508562944.

The previous prime is 5478773659. The next prime is 5478773683. The reversal of 5478773668 is 8663778745.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 902521764 + 4576251904 = 30042^2 + 67648^2 .

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, 1086271 + ... + 1091302.

It is an arithmetic number, because the mean of its divisors is an integer number (434426013).

Almost surely, 2^5478773668 is an apocalyptic number.

It is an amenable number.

5478773668 is a deficient number, since it is larger than the sum of its proper divisors (4947450644).

5478773668 is a wasteful number, since it uses less digits than its factorization.

5478773668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2177631 (or 2177629 counting only the distinct ones).

The product of its digits is 47416320, while the sum is 61.

The square root of 5478773668 is about 74018.7386274584. The cubic root of 5478773668 is about 1762.9004417689.

The spelling of 5478773668 in words is "five billion, four hundred seventy-eight million, seven hundred seventy-three thousand, six hundred sixty-eight".