5578779218 has 4 divisors (see below), whose sum is σ = 8368168830. Its totient is φ = 2789389608.

The previous prime is 5578779203. The next prime is 5578779233. The reversal of 5578779218 is 8129778755.

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

It is an interprime number because it is at equal distance from previous prime (5578779203) and next prime (5578779233).

It can be written as a sum of positive squares in only one way, i.e., 3859267129 + 1719512089 = 62123^2 + 41467^2 .

It is a super-2 number, since 2×5578779218² = 62245555126377383048, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1394694803 + ... + 1394694806.

Almost surely, 2^5578779218 is an apocalyptic number.

5578779218 is a deficient number, since it is larger than the sum of its proper divisors (2789389612).

5578779218 is a wasteful number, since it uses less digits than its factorization.

5578779218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2789389611.

The product of its digits is 9878400, while the sum is 59.

The square root of 5578779218 is about 74691.2258434684. The cubic root of 5578779218 is about 1773.5620668627.

The spelling of 5578779218 in words is "five billion, five hundred seventy-eight million, seven hundred seventy-nine thousand, two hundred eighteen".