5377777778 has 4 divisors (see below), whose sum is σ = 8066666670. Its totient is φ = 2688888888.

The previous prime is 5377777753. The next prime is 5377777781. The reversal of 5377777778 is 8777777735.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 5185872169 + 191905609 = 72013^2 + 13853^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1344444443 + ... + 1344444446.

Almost surely, 2^5377777778 is an apocalyptic number.

5377777778 is a deficient number, since it is larger than the sum of its proper divisors (2688888892).

5377777778 is a wasteful number, since it uses less digits than its factorization.

5377777778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2688888891.

The product of its digits is 98825160, while the sum is 65.

The square root of 5377777778 is about 73333.3333348485. Note that the first 5 decimals coincide. The cubic root of 5377777778 is about 1752.0007351890. Note that the first 3 decimals are identical.

The spelling of 5377777778 in words is "five billion, three hundred seventy-seven million, seven hundred seventy-seven thousand, seven hundred seventy-eight".