5578778755 has 16 divisors (see below), whose sum is σ = 7538715648. Its totient is φ = 3926412000.

The previous prime is 5578778743. The next prime is 5578778783.

5578778755 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 5578778755 - 2⁹ = 5578778243 is a prime.

It is a super-2 number, since 2×5578778755² = 62245544794478700050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1634301 + ... + 1637710.

It is an arithmetic number, because the mean of its divisors is an integer number (471169728).

Almost surely, 2^5578778755 is an apocalyptic number.

5578778755 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

5578778755 is a deficient number, since it is larger than the sum of its proper divisors (1959936893).

5578778755 is a wasteful number, since it uses less digits than its factorization.

5578778755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3272058.

The product of its digits is 96040000, while the sum is 64.

The square root of 5578778755 is about 74691.2227440414. Note that the first 3 decimals coincide. The cubic root of 5578778755 is about 1773.5620177982.

The spelling of 5578778755 in words is "five billion, five hundred seventy-eight million, seven hundred seventy-eight thousand, seven hundred fifty-five".